Choose the best answer:
I think the light bulb the most important ____________.
Suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Lời giải:
Báo saiGiải thích:Dựa vào nghĩa của câu chọn C
Tạm dịch:Tôi nghĩ bóng đèn là phát minh quan trọng nhất.
Câu hỏi liên quan
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.
Christina and James met in college and have been dating for more than five years. For the past two years, they have been living together in a condo they purchased jointly. While Christina and James were confident in their decision to enter into a commitment like a 20-year mortgage, they are unsure if they want to enter into marriage. The couple had many discussions about marriage and decided that it just did not seem necessary. Wasn't it only a piece of paper? And didn't half of all marriages end in divorce?
Neither Christina nor James had seen much success with marriage while growing up. Christina was raised by a single mother. Her parents never married, and her father has had little contact with the family since she was a toddler, Christina and her mother lived with her maternal grandmother, who often served as a surrogate parent. James grew up in a two-parent household until age seven, when his parents divorced. He lived with his mother for a few years, and then later with his mother and her boyfriend until he left for college. James remained close with his father who remarried and had a baby with his new wife.
Recently, Christina and James have been thinking about having children and the subject of marriage has resurfaced. Christina likes the idea of her children growing up in a traditional family; while James is concerned about possible marital problems down the road and negative consequences for the children should that occur. When they shared these concerns with their parents, James's mom was adamant that the couple should get married. Despite having been divorced and having a live-in boyfriend of 15 years, she believes that children are better off when their parents are married. Christina's mom believes that the couple should do whatever they want but adds that it would "be nice" if they wed. Christina and James's friends told them, married or not married; they would still be a family.According to the paragraph 2, which of the following statements is TRUE?
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.
When John Mills was going to fly in an airplane for the first time, he was frightened. He did not like the idea of being thousands of feet up in the air. "I also didn't like the fact that I wouldn't be in control," says John.
"I'm a terrible passenger in the car. When somebody else is driving, I tell them what to so. It drives everybody crazy."
However John couldn't avoid flying any longer. It was the only way he could visit his grandchildren in Canada.
"I had made up my mind that I was going to do it, I couldn't let my son, his wife and their three children travel all the way here to visit me. It would be so expensive for them and I know Tom's business isn't doing so well at the moment - it would also be tiring for the children - it's a nine-hour flight!" he says.
To get ready for the flight John did lots of reading about airplanes. When he booked his seat, he was told that he would be flying on a Boeing 747, which is better known as a jumbo jet. "I needed to know as much as possible before getting in that plane. I suppose it was a way of making myself feel better. The Boeing 747 is the largest passenger aircraft in the world at the moment.
The first one flew on February 9th 1969 in the USA. It can carry up to 524 passengers and 3.400 pieces of luggage. The fuel for airplanes is kept in the wings and the 747's wings are so big that they can carry enough fuel for an average car to be able to travel 16,000 kilometers a year for 70 years. Isn't that unbelievable? Even though I had discovered all this very interesting information about the jumbo, when I saw it for the first time, just before I was going to travel to Canada, I still couldn't believe that something so enormous was going to get up in the air and fly. I was even more impressed when I saw how big it was inside with hundreds of people!"
The biggest surprise of all for John was the flight itself. "The take-off itself was much smoother than I expected although I was still quite scared until we were in the air. In the end, I managed to relax, enjoy the food and watch one of the movies and the view from the window was spectacular. I even managed to sleep for a while!
"Of course," continues John, "the best reward of all was when I arrived in Canada and saw my son and his family, particularly my beautiful grandchildren. Suddenly, I felt so silly about all the years when I couldn't even think of getting on a plane. I had let my fear of living stop me from seeing the people I love most in the world. I can visit my son and family as often as I like now!" Question 24: Why did John Mills fly in an airplane?How did John feel about his fears in the end?
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
“When a snow leopard stalks its prey among the mountain walls, it moves softly, slowly,” explains Indian biologist Raghunandan Singh Chundawat, who has studied the animal for years. “If it knocks a stone loose, it will reach out a foot to stop it from falling and making noise.” One might be moving right now, perfectly silent, maybe close by. But where? And how many are left to see?
Best known for its spotted coat and long distinctive tail, the snow leopard is one of the world’s most secretive animals. These elusive cats can only be found high in the remote, mountainous regions of central Asia. For this reason, and because they hunt primarily at night, they are very rarely seen.
Snow leopards have been officially protected since 1975, but enforcing this law has proven difficult. Many continue to be killed for their fur and body parts, which are worth a fortune on the black market. In recent years, though, conflict with local herders has also led to a number of snow leopard deaths. This is because the big cats kill the herders’ animals, and drag the bodies away to eat high up in the mountains.
As a result of these pressures, the current snow leopard population is estimated at only 4,000 to 7,000, and some fear that the actual number may already have dropped below 3,500. The only way to reverse this trend and bring these cats back from near extinction, say conservationists, is to make them more valuable alive than dead.
Because farming is difficult in Central Asia’s cold, dry landscape, traditional cultures depend mostly on livestock (mainly sheep and goats) to survive in these mountainous regions. At night, when snow leopards hunt, herders’ animals are in danger of snow leopard attacks. Losing only a few animals can push a family into desperate poverty. “The wolf comes and kills, eats, and goes somewhere else,” said one herder, “but snow leopards are always around. They have killed one or two animals many time. Everybody wanted to finish this leopard.”
To address this problem, local religious leaders have called for an end to snow leopard killings, saying that these wild animals have the right to exist peacefully. They’ve also tried to convince people that the leopards are quite rare and thus it is important to protect them. Financial incentives are also helping to slow snow leopard killings. The organization Snow Leopard Conservancy–India has established Himalayan Homestays, a program that sends visitors to the region to herders’ houses. For a clean room and bed, meals with the family, and an introduction to their culture, visitors pay about ten U.S. dollars a night. Having guests once every two weeks through the tourist season provides the herders with enough income to replace the animals lost to snow leopards. In addition, Homestays helps herders build protective fences that keep out snow leopards. The organization also conducts environmental classes at village schools and trains Homestays members as nature guides, available for hire. In exchange, the herders agree not to kill snow leopards.
In Mongolia, a project called Snow Leopard Enterprises (SLE) helps herder communities earn extra money in exchange for their promise to protect the endangered cat. Women in Mongolian herder communities make a variety of products—yarn for making clothes, decorative floor rugs, and toys—using the wool from their herds. SLE buys these items from herding families and sells them abroad. Herders must agree to protect the snow leopards and to encourage neighbors to do the same.
The arrangement increases herders’ incomes by 10 to 15 percent and “elevates” the status of the women. If no one in the community kills the protected animals over the course of a year, the program members are rewarded with a 20 percent bonus in addition
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions:
Facebook users spend an average of more than 15 hours a month on the social networking site. While there are plenty who caution against such intensive use — and there are a number of studies detailing the harm Facebook could potentially cause — there also are lots of reports extolling the site's virtues. As the social media giant prepares for its upcoming initial public offering, here are some ways Facebook just might be good for you.
Spending time on Facebook can help people relax, slow down their heart rate and decrease stress levels, according to researchers from the Massachusetts Institute of Technology and the University of Milan. In a study published earlier this year, researchers studied 30 students and found that a natural high was sparked when they were on the social media network that led to the relaxed heart rates and lower levels of stress and tension. In the study, the students were monitored in three situations: looking at panoramic landscapes, performing complicated mathematical equations and using Facebook. While the first situation was the most relaxing to students and the math problems were the most stressful, the time on Facebook uncovered high levels of attractiveness and arousal. The findings support the researchers' hypothesis that Facebook's success, as well as that of other social media networks, correlates to the specific positive mental and physical state users experience.
While many may argue that social media networks only distract employees, research shows the opposite may be true. Research from Keas.com found that a 10-minute Facebook break makes employees happier, healthier and more productive. The study examined workers in three groups: one that was allowed no breaks, one that was allowed to do anything but use the Internet and one that was allowed 10 minutes to use the Internet and Facebook. The Facebook group was found to be 16 percent more productive than the group that was not allowed to use the Internet and nearly 40 percent more productive than the group that was allowed no breaks. "Short and unobtrusive breaks, such as a quick surf on the Internet, enables the mind to rest itself, leading to a higher net total concentration for a day's work, and as a result, increased productivity," said Brent Coker of the department of management and marketing at the University of Melbourne in Australia.
Facebook is also in the business of matchmaking. Research shows that nearly 60 percent of singles will friend someone new on Facebook after meeting them in person. If they like what they see, 25 percent are likely to contact their new love interest via Facebook. Once the courting is over, nearly 40 percent of those social networking adults will update their relationship status on Facebook, with just 24 percent telling their friends first. Facebook use between couples will continue through the dating process, the research shows. Throughout the day, 79 percent of couples said they send partners Facebook messages or chat on the social network. In addition, more than 60 percent would post romantic messages on their significant other's Facebook wall. When the relationship ends, more than half of those surveyed immediately update their status to single, which automatically sends out a notification to their friend list to start the dating cycle over again.The word "sparked" in the second paragraph probably means _.
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation-conversion of liquid water to water vapor. In this manner, the salinity is increased, since the salt behind. If this is carried to the extreme, of course, white crystals of salt would be left behind.
The opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.
Normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.
A third process by which salinity may be altered is associated with the formation and melting of sea ice. When seawater is frozen, the dissolved materials are left behind. In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.
In the Weddell Sea, off Antarctica, the densest water in the ocean is formed as a result of this freezing process, which increases the salinity of cold water. This heavy water sinks and is found in the deeper portions of the oceans of the world.Why does the author mention the Weddell Sea?
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Read the following passage and mark the letter A,B,C or D on your answer sheet to indicate the correct word for each of the blanks
Swim, Cycle, and Run
For athletes who like to (1).............. a variety of endurance sports in a single race, triathlons are a great fit. These competitions (2)......... running, cycling, and swimming into one race, and they take place one after the other in a single continuous timed race. Athletes who participate must be in top physical form and have the skills needed to complete each portion of the race.
Training for triathlons means the athletes have to become proficient not only in the sport required in each stage, but they also have to become familiar with what (3)............. from one to the other does to their bodies. Many inexperienced triathletes are surprised to (4)............... hard it can be to switch from swimming to cycling to running, and how tired their muscles can suddenly feel. One thing all triathletes can agree (5).................is that no one ever told them that running a triathlon would be easy.(5)..............................
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Choose the option A, B, C or D that best fits the blank space in the following passage:
"At last it is here: tomorrow is the exam day. There is no more homework to do, you have done lots of (1)….. and you have had plenty of useful practice with past papers. You have finished the (2)…. . So what should you do now? Probably the least advisable course of (3)…. would be to carry on studying late into the night, trying (4)….. to learn things you should have learned long ago and (5)…. in the morning with an awful headache.
A far better idea is to practise, (6)….. a singer or a musician does, what you already knew. In order not to feel (7)…. the next day, go to bed early and get up at your usual (8)….. . You may be a little bit (8)….. but that is probably just a (10)…… of your determination to do will in the exam."5. and (5)…. in the morning with an awful headache.
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
THE FAMILY
Statesmen define a family as "a group of individuals having a common dwelling and related by blood adoption or marriage, (6) ...... includes common-law relationships". Most people are born into one of these groups and will live their lives as a family in such a group.
Although the definition of a family may not change, (7)....... relationship of people to each other within the family group changes as society changes. More and more wives are taking paying jobs, and, as a result, the roles of husband, wife and children are changing. Today, men expect to work for pay for about 40 years of their lives, and, in today's marriages (8)....... which both spouses have paying jobs, women can expect to work for about 30 to 35 years of their lives. This means that man must learn to do their share of family tasks such as caring for the children and daily (9)..... . Children, too, especially adolescents, have to (10)....... with the members of their family in sharing household tasks.
The widespread acceptance of contraception has meant that having children is as matter of choice, not an automatic result of marriage. Marriage itself has become a choice. As alternatives such as common-law relationship and single-parent families have become socially acceptable, women will become more independent
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Read the passage and decide which answer A, B, C, or D best fits each space.
The Lost Shoe
Once a poor farmer had a daughter named Little Pea. After his wife died, the farmer married again. His new wife had a daughter, Stout Nut. (1) ________, the new wife was very cruel to Little Pea. Little Pea had to do chores all day. This made Little Pea’s father very upset. He soon died (2) ______ a broken heart.
Summer came and went. In the fall, the village held its harvest festival. That year, everyone was (3) ________ as the prince wanted to choose his wife from the village. Stout Nut’s mother made new clothes for her, but poor Little Pea had none. (4) ___________, before the festival started, a fairy appeared and (5) ________ changed Little Pea’s rags into beautiful clothes.
As Little Pea ran to the festival, she dropped one of her shoes and lost it. When the prince found the shoe, he decided to marry the girl who owned it. Of course, the shoe fitted Little Pea. and the prince immediately fell in love with her.
3.That year, everyone was (3) ________ as the prince wanted to choose his wife from the village.
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Read the passage carefully and choose the correct answer.
The American education system requires that students complete 12 years of primary and secondary education prior to attending university or college. This may be accomplished either at public or government-operated schools, or at private schools. These 12 years of schooling or their equivalent may also be completed outside the USA, thus giving foreign students the opportunity to pursue the benefits of the American education system and obtain a quality American education. Perhaps one of the most impressive facts is that a large number of presidents, prime ministers and leaders from other countries have experienced the American education system and graduated from a university or school in the USA. In many fields and industries, the American education system offers the most cutting-edge, sought-after programs at the world's best schools. That is why graduating from an accredited American school and being exposed to the rigors of the American education system is an investment in your future. Whether you want to study at a top USA university, a top USA college, a vocational or high school, a thorough understanding of how the American education system works is essential. Without a clear grasp of the American education system, an international student will find it difficult to make the right academic choices. It is no surprise that the American education system and the American school system host more international students than any other country in the world!
The expression government-operated could best be replaced by _____.
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
There is a common expression in the English language referring to a blue moon. When people say that something happens “only once in a blue moon,” they mean that it happens only very rarely, once in a great while. This expression has been around for at least a century and a half; there are references to this expression that date from the second half of the nineteenth century. (5) The expression “a blue moon” has come to refer to the second full moon occurring in any given calendar month. A second full moon is not called a blue moon because it is particularly blue or is any different in hue from the first full moon of the month. Instead, it is called a blue moon because it is so rare. The moon needs a little more than 29 days to complete the cycle from full moon to full moon. Because every month except February has more than 29 days, every month will have at least one full moon (except February, which will have a full moon unless there is a full moon at the very end of January and another full moon at the very beginning of March). It is on the occasion when a given calendar month has a second full moon that a blue moon occurs. This does not happen very often, only three or four times in a decade. The blue moons of today are called blue moons because of their rarity and not because of their color; however, the expression “blue moon” may have come into existence in reference to unusual circumstances in which the moon actually appeared blue. Certain natural phenomena of gigantic proportions can actually change the appearance of the moon from Earth. The eruption of the Krakatao volcano in 1883 left dust particles in the atmosphere, which clouded the sun and gave the moon a bluish tint. This particular occurrence of the blue moon may have given rise to the expression that we use today. Another example occurred more than a century later. When Mount Pinatubo erupted in the Philippines in 1991, the moon again took on a blue tint.A blue moon could be best described as
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
ALFRED NOBEL
Alfred Nobel was born on October 21, 1833 in Sweden. His important invention was dynamite - a powerful (1)........ _. This dynamite business made him a very rich man.
One day, Alfred Nobel read about his death in a newspaper. In fact, it was his brother's death. The mass media (2).........him a saleman of death, "The dynamite king". Nobel was very upset. He had invented dynamite to save lives - lives ( 3 )............ _ were lost because other explosives were dangerous to use. He hated violence and war. And he did not like the world to think of him as a man of war.
He thought (4)..........the best way for people to use his fortune for years. (5)................... _ he knew what to do with his fortune. Alfred Nobel established the Nobel Prize, an annual award to honour leaders of science, literature, and world peace. Alfred Nobel died on December 10, 1896. He was unmarried and had no children. His important decision changed the way the world thought of him. He was remembered the way he wanted: Alfred Nobel, man of peace.(1)..........................
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Conference Room 120 can be booked for meetings and conference calls. First, make a reservation request online at www.gzpoffice.com/confroom. When your request ---135---, the system automatically checks for availability. Your request will be accepted if no other event is scheduled at that time. The system will then immediately send you an e-mail message to ---136--- your reservation. However, if another meeting is scheduled that conflicts with yours, you will be notified that the request has been declined.
---137---. It is therefore ---138--- that you schedule your will event well ahead of time. This way, if a given time slot is already reserved, you will be able to reschedule your meeting.136.............
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks
Many people enjoy lying in bed in the morning, but can you imagine having to spend 90 days in bed? Could you stand the boredom and the frustration of not being(6)................... to get up? That was the task that faced 14 volunteers when they started out on a bed-rest experiment being conducted (7)…...........the European Space Agency.
The study had a serious purpose: to investigate the changes that take place in the human body during long-duration spaceflight. Lying in a horizontal position was the best way of (8)……....... weightlessness. The aim was to discover what effect period of weightlessness will have on the health of astronauts spending several months on the International Space Station.
The volunteers ate their meals, took showers and underwent medical tests without ever sitting up. That's even tougher than it sounds, especially when you (9).......... that no visitors were permitted. However, each volunteer did have a mobile phone, as well as access to the latest films, computer games and music. Surprisingly, Everyone was in a good (10).......... at the end of the 90 days, 'I would do it again,' said one of the volunteers. 'It was disorientating, but we knew we were 'contributing to medical research and space exploration.'(9)..............................
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion. The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.
Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.Why are marine organisms good candidates for fossilization?
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Read the following passage and choose the best answer for each blank.
The General Certificate of Secondary Education or the GCSE examinations for (26) _____ are the standard school-leaver qualifications taken by (27) _____ all UK students in the May and June following their 16th birthday. If you come to a UK (28) _____ school before you (29) _____ the age of 16, you will study towards GCSE examinations in up to 12 subjects. Some subjects are compulsory, including English arid mathematics, and you can select (30) _____, such as music, drama, geography and history from a series of options. GCSEs provide a good all-round education (31) _____ you can build on at college and eventually at university. AS- and A-levels are taken after GCSEs. They are the UK qualifications most (32) _____ accepted for entry to university and are available in subjects from the humanities, arts, sciences and social sciences as well as in (33) _____ subjects such as engineering, and leisure and tourism. You can study up to four subjects at (34) _____ same time for two years, (35) _____ AS-level examinations at the end of your first year (called the lower-sixth) and A-level qualifications at the end of your second year (called the upper-sixth).
(27) _____
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
When living and working in another country, there are numerous things to consider apart from the more obvious ones of climate, language, religion, currency, etc. Some important considerations are less obvious. For example, do you have a pet or do you enjoy a hobby such as horse riding? Your animal or hobby may be perceived in a completely different light in another culture so it’s important to consider the significance given to specific animals in different parts of the world and general perceptions towards them.
One example which is often mentioned in popular press is the case of dogs. In some cultures, like the US or UK, dogs are loved and considered a great pet to have at home and with the family. In other cultures, such as those where Islam is the majority religion, dogs may be perceived as dirty or dangerous. Muslims treatment of dogs is still a matter of debate amongst Islamic scholars. While these animals are widely considered by many Western cultures to be „man’s best friend’, the Koran describes them as “unhygienic”. Muslims will therefore avoid touching a dog unless he can wash his hands immediately afterwards, and they will almost never keep a dog in their home.
In Iran, for instance, a cleric once denounced „the moral depravity’ of dog owners and even demanded their arrest. If you are an international assignee living and working in Saudi Arabia or another Arabic country, you should remember this when inviting Arab counterparts to your house in case you have a dog as a pet. This is just one example of how Islam and other cultural beliefs can impact on aspects of everyday life that someone else may not even question. A Middle Eastern man might be very surprised when going to Japan, for instance, and seeing dogs being dressed and pampered like humans and carried around in baby prams!
Dogs are not the only animals which are perceived quite differently from one culture to another. In India, for example, cows are sacred and are treated with the utmost respect. Conversely in Argentina, beef is a symbol of national pride because of its tradition and the high quality of its cuts. An Indian working in Argentina who has not done his research or participated in a cross cultural training programme such as Doing Business in Argentina may be surprised at his first welcome dinner with his Argentinean counterparts where a main dish of beef would be served.
It is therefore crucial to be aware of the specific values assigned to objects or animals in different cultures to avoid faux–pas or cultural misunderstandings, particularly when living and working in another culture. Learning how people value animals and other symbols around the world is one of the numerous cultural examples discussed in Communicaid’s intercultural training courses. Understanding how your international colleagues may perceive certain animals can help you ensure you aren’t insensitive and it may even provide you with a good topic for conversation.The author mentioned cows in paragraph 4 as an example of .
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1)
Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2)
Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3)
The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4)
Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5)
It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force.Which statement represents the views of economists?
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TAYLORSVILLE (October 4) – Mayor Bo Crandell of the town of Taylorsville announced plans for a bicycle-share program this week. Past efforts to encourage the use of bicycles for transportation failed because there were no convenient areas to park bicycles downtown. Additionally, cyclists ---139--- to share narrow streets with cars and trucks, raising safety concerns.
With the new bicycle-share initiative, bicycle stations will be placed ---140--- at eight locations around Taylorsville. One important purpose of the initiative is to ease the limited vehicle parking in the downtown area. “---141---, I want to encourage local residents to spend more time outdoors and enjoy our beautiful town,” added the mayor at the end of his remarks. ---142---.
142..................
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Choose the best answer to complete the passage.
Twenty (1)________ ago, kids in school had never even heard of the internet. Now, I'll bet you can't find a single person in your school who hasn't at least heard of it. In fact, many of us use it on a regular basis and even have access to it from our homes! The 'net' in internet really stands (3) _________ network. A (2) __________ is two or more computers connected together so that information can be (4) __________, or sent from one computer to another. The internet is a vast resource for all types of information. You may enjoy using it to do research for a school project, downloading your favourite songs or communicating with friends and family. Information is accessed through web pages (5) _________ companies, organizations and individuals create and post. It's kind of like a giant bulletin board that the whole world uses! But since anyone can put anything on the internet, you also have to be careful and use your best judgement and a little common sense.
Just because you read something on a piece of paper someone sticks on a bulletin board doesn't mean it's good information, or even correct, for that matter. So you have to be sure that whoever posted the information knows what they're talking about, especially if you're doing (6) ___________! But what if you're just emailing people? You still have to be very careful. If you've never met the person that you're communicating with online, you could be on dangerous ground! You should never give out any personal information to someone you don't know, not even your name! And just like you can't believe the information on every website out there, you can't rely (7) ________ what strangers you 'meet' on the internet tell you either. Just like you could make up things about yourself to tell someone, someone else could do the same to you!
(4)________