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You get off your plane and make your way to the Baggage Reclaim area. After quite some time spent waiting, their is no sign of your bags and you begin to consider the possibility that they may have gone (1) _________. What should you do? Firstly, don’t panic. The most likely (2) _________ is that your bags simply didn’t make it onto the flight, perhaps because they were mislaid at the departure airport, or perhaps because the aircraft had already (3) _________ its weight allowance. If they fail to appear on the carousel, report the loss before you leave the baggage hall and go through customs. Recovering your luggage should be no problems, (4) ______ you’ve kept hold of your baggage checks – those little barcodes stuck to the back of your tickets at check-in. Go to the handling agent’s desk and complete a Property Irregularity Report (PIR) form, (5) _________ describes the checked bag and its contents. Then, ask the baggageservices manager for a contact telephone number and confirm that your bags will be forwarded to your final destination

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You must drive more slowly in built up areas ............... you drive in the city, it is ............... that you will have an accident.

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Political and economic reforms launched in 1986 have transformed the country from  one of the poorest in the world, with per capita income around US $100, to lower middle income status within a quarter of a century with per capita income of around US$ 2,100 by the end of 2015.  Vietnam’s per capita GDP growth since 1990 has been among the fastest in the world, averaging 5.5 percent a year since 1990, and 6.4 percent per year in the 2000s. Vietnam’s economy continued to strengthen in 2015, with estimated GDP growth rate of 6.7 percent for the whole year.  The Vietnamese population is also better educated and has a higher life expectancy than most countries with a similar per capita income. The maternal mortality ratio has dropped below the upper-middle-income country average, while under-five mortality rate has fallen by half, to a rate slightly above that average. Access to basic infrastructure has also  improved substantially. Electricity is now available to almost all households, up from less than half in 1993. Access to clean water and modern sanitation has risen from less than 50 percent of all households to more than 75 percent.  Vietnam’s Socio-Economic Development Strategy (SEDS) 2011-2020 gives attention to structural reforms, environmental sustainability, social equity, and emerging issues of macroeconomic stability. It defines three “breakthrough areas”: promoting human resources/skills development (particularly skills for modern industry and innovation), improving market institutions, and infrastructure development. In addition, the five-year Socio-Economic Development Plan 2011-2015 focused on three critical restructuring areas - the, banking sector, state-owned enterprises and public investment that are needed to achieve these objectives. The recent draft of the SEDP 20162020 acknowledges the slow progress of the reform priorities of the SEDP 2011-2015. With agriculture still accounting for almost half the labor force, and with significantly lower labor productivity than in the industry and services sectors, future gains from structural transformation could be substantial. The transformation from state to private ownership of the economy is even less advanced. The state also wields too much influence in allocating land and capital, giving rise to heavy economy wide inefficiencies. So, adjusting the role of the state to support a competitive private sector-led market economy remains a major opportunity. This will be important for enhancing productivity growth which has been stagnating for a long time.
5. According to the passage, what is NOT an example of “breakthrough areas”?

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When hosting an Olympic Games, a country has to take account of several considerations, among which the financial one is by far the most important. The costs of hosting the Olympics can (1) _______ tens of billions of dollars, and it is commonplace for budgets to double or even triple. In addition to the direct costs of hosting the Games (the opening and closing ceremonies, athletes’ village, security, etc.), cities often must build expensive new venues (2) _______ lesser-known sports. Once constructed, sports venues often incur additional maintenance costs long after the Games have ended. While costs are the (3) _______ concern for a host city, there are other factors to consider. For one, an Olympic host city may receive substantial revenue from ticket sales, tourist spending, corporate sponsorship, and television rights. Cities such as Los Angeles (1984) and Seoul (1988) actually made a large profit from the Games they hosted. (4) _______, hosting the Olympic Games confers prestige on a host city and country, which can lead to increased trade and tourism. The Olympics are also an opportunity to invest in projects (5) _______ improve the city’s quality of life, such as new transportation systems

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I started snowboarding in my late 20s and, knowing the dangers involved, my main aim has always been to get myself safely down the mountain in one piece. However, last year, I began to feel that my lack of courage was preventing me from improving. So I booked myself on the Snowcamp course in the town of Bourg-Saint-Maurice in the French Alps. There were 14 of us on the course and we stayed in a cheap guesthouse just outside the town. It was a basic-looking building made of local wood. There were strict rules about recycling our rubbish and all the electricity came from a nearby windmill. The facilities, however, went well beyond what I had expected for the price. There was a log fire, a heated boot room, fine balcony views and a menu that any chef would be proud of. Snowcamp was a good mix of holiday and group learning. Locations for lessons were chosen daily according to the snow conditions. Then we were put into three groups, depending on what skills people wanted to work on. Most of the time, I stayed on the main slopes. The teachers encouraged me to increase my speed and I even did some jumps. After a few days, a teacher called Johno persuaded me to take on a bigger challenge and try the deeper snow. The first 20 seconds of the lesson were fantastic, but then it got difficult. I kept sinking and then having to dig myself out. After 40 minutes, I felt like crying with tiredness and anger but I continued pushing myself and, when I got back on to the main slopes, I suddenly found everything far easier than before. It had been worth all the pain!  
3. Pascal’s lesson with Johno was valuable because

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Advances in mobile technology and social networking websites mean we spend more time online than ever before. If Facebook were a country, it would be the third largest in the world by population (The Economist, 2010). It is (1) ______ not surprising that so many psychologists, sociologists, and others are eager to give their thoughts on how this is impacting negatively on our society. The biggest criticism levelled at social networking is that young people are losing their offline friends to online friends (2) ______ are unable to provide the same deep connection and emotional support. However, a lot of research shows these criticisms are generally (3) ______. Allen et al. (2010) discovered that it is socially adjusted adolescents who are more likely to have a networking profile than those who are not. One study by the Pew Internet and American Life Project (2009) found that people are not (4) ______ offline friends with online companions but are using them to support their offline relationships. The study also found that social networks allow us to have discussions with a much more diverse set of people than in the real world, so we share knowledge with people from a wide (4) ______ of backgrounds

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The popular sport of golf is now widely considered an activity of rich people. Have you ever thought what makes golf so attractive to businessmen and politicians? (1) _________ they are mostly in their 50s and 60s, and with such safe and undemanding sport as golf, they still can improve their results. Golf is challenging. Among (2) ________ wealthy people, golf is exceptionally popular. Rich people really do not like to lose, and with golf, that won’t be too much of a problem because one can compete (3) _______ oneself. During a golf game, businessmen can concentrate on improving their own results while no one is trying to prevent their actions. Another thing about the challenge of golf being so charming for rich people is (4) _______ they have accomplished the impossible to reach their heights. Golf would bring new experience to their lives and make it more interesting. Maybe that’s why golf is particularly popular among older businessmen, who have already done all they wanted in life and now are looking for some new feelings. Playing golf is convenient. With rich people having very little of free time, golf is highly convenient as they can easily find golf courses open at nighttime. Besides, they wouldn’t have to drive too far to play golf. They don’t even necessarily need to have (5)_______ to play a nice round! As we already mentioned, one can play against himself to perfect the result

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The number of people accessing the State’s and community’s priority policies and  programmes is increasing, said Minister of Labour, Invalids and Social Affairs Dao Ngoc Dung. Vietnam has around 6.2 million people over the age of two with disabilities, making up 7.06 per cent of the country’s population. Of those, 28 per cent are severely disabled, 58 per cent female, 28 per cent children and 10 per cent living in poverty. Most live in rural areas and many are victims of Agent Orange.  Minister Dung said in the past, the State, the Party and Vietnamese people had paid much care to people with disability. Vietnam ratified the United Nations’ Convention on the Rights of People with Disability in 2014. In March this year, the country ratified the International Labour Organisation’s Convention 159 about jobs for people with disability. It strongly confirmed Vietnam’s commitment ensuring the disabled would not be discriminated at work.  Last month, the Secretariat Committee issued the Instruction 39 about the Party’s leading work on affairs related to people with disability. The National Assembly later ratified the amended Law on Labour with many adjustments relating to disabled people. Dung said that every year, millions of disabled people receive an allowance from the State and all of provinces and cities had rehabilitation centres. Attending the event, Truong Thi Mai, head of the Party Central Committee’s Commission for Mass Mobilisation, said besides the achievements, Vietnam still sees many obstacles. Infrastructure is still limited demand for people with disability and many live below the poverty line depending heavily on their families.  Mai asked organisations to improve education to raise people’s awareness of the meaning of supportive work to people with disability. This year, more than VNĐ17 trillion (US$735.4 million) from the State budget was allocated to provinces and cities to implement policies for people with disability, according to the Ministry of Labour, Invalids and Social Affairs.  The Ministry of Planning and Investment on Thursday launched the programme “White stick for Vietnamese visual impaired people”. Its aim is to present one million white sticks to visually impaired people across the country. Training to use the device will also be provided. Minister of Planning and Investment Nguyen Chi Dung said the ministry will listen to disabled people’s demands and wishes and put them into its policies. Deputy chairwoman of the National Assembly Tong Thi Phong said Vietnam has committed to developing socioeconomy, taking care of social equality and improving social management ability.  
4. According to paragraph 3, what was the view of Vietnam’s governing bodies towards the disabled?

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Certain birds are, more often than not, considered bad luck, or even a sign of impending death. For example, all over the world, both crows and ravens have some connection to war, and death. In early times, crows and ravens were thought to accompany the gods of war, or be signs of the gods’ approaching arrival. This idea later changed. Crows in particular were thought to be harbingers of ill fortune or, in some cases, guides to the afterlife. Woe be it to the person who saw a single crow or raven flying overhead, for this was most certainly a portent of death in the near future. Interestingly, though potentially bad luck for people individually, the raven is considered to be good luck for the crown of England. So much so, in fact, that a “raven master” is, even today, an actual government position in London. He takes care of the ravens there and also clips their wings, ensuring that these birds can never fly far from the seat of the British government. This way, the kingdom will never fall to ill fortune. Another bird that is thought to play a part in forecasting the fortunes of people is the swallow. Depending on how and when it is seen, the swallow can be a harbinger of either good or ill fortune. Perhaps inspired by the swallow’s red-brown breast, Christian people initially related the swallow to the death of Jesus Christ. Thus, people who saw a swallow fly through their house considered it a portent of death. Later, however, farmers began to consider swallows signs of good fortune. Any barn that has swallows living in it is sure to be blessed in the following year. Farmers also have to beware of killing a swallow; that would be certain to end any good luck they might have had. Though many people think these superstitions are old wives’ tales, there is actually some evidence to support them. For example, crows and ravens, being scavengers, appear at the aftermath of battles. Thus, large numbers of crows and ravens could be good indications of war in an area. As well, swallows feed on insects that can cause infections in cattle. Thus, a farmer who has many swallows in his barn may actually have healthier animals on his farm. Therefore, the next time you feel inclined to laugh at an old wives’ tale, maybe you had better find out if there is any truth to it first!
5. As mentioned in the passage, the swallow originally was considered as ___________

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Carefully guiding a needle that's longer than his tiny fingers, a young boy in Pakistan stitches together the leather pieces of a soccer ball. He sits crouched in the corner of a hot, airless shed for 12 hours. For his long day's work, he will earn 60 cents.
The boy is one of more than 200 million children who work at hard, sometimes dangerous jobs all over the world. Child labor exists in two-thirds of the world's nations. From Indonesia to Guatemala, poor children as young as six are sent off to work. Often they are mistreated and punished for not working hard enough. Children mix the gunpowder for firecrackers in China and knot the threads for carpets in India, all for pennies a day. Sometimes they are sold as slaves.
In a speech to the Child Labor Coalition when he was U.S. Secretary of Labor, Robert Reich expressed gratitude for the organization's work to end abuse of child labor, "You turned up the heat, and you got results." He also congratulated Craig Kielburger, then 13, of Canada, who traveled the world for a year fighting for kids' rights. Craig believes kids can make a difference. He offers this advice, "Write letters to companies and government officials. Put pressure on leaders to make changes and to stop the misuse of children."
One solution to the child-labor problem in poor countries is education. "The future of these countries," Secretary Reich declared, "depends on a work force that is educated. We are prepared to help build schools."
Education has helped to make the world a brighter place for one youth, Aghan of India. When he was nine, Aghan was kidnapped from his home and sold to a carpet maker. Aghan's boss was very cruel. "I was always crying for my mother," he recalls. Aghan's dream was to learn to write so that he could send letters to his parents. Fortunately, a group that opposes child labor rescued Aghan from the factory. He was sent to a shelter in New Delhi where he worked hard to learn to write.

Why do families allow young children to go to work?

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Commentary from researchers in the College of Pharmacy at The University of Texas at Austin in the journal Science provide new findings in alcohol use disorder (AUD) research The article, “Compelled to drink: Why some cannot stop,” considers recent findings by researchers Siciliano et al. that discovered individual differences in the activity of neurons in a frontal cortex to brain stem circuit that predicts the later escalation of alcohol drinking to compulsive intake in a mouse model. “These researchers not only defined a new brain circuit involved in compulsive drinking, but showed individual differences at the level of electrical activity in the neurons that comprise this circuit,” Nixon said. “The individual differences in electrical activity predicted which mice would go on to drink compulsively after a binge-like drinking episode despite drinking the same amount of alcohol during that episode.” The research group previously found that this circuit is important for responses to aversive events, and they have now asked why aversive outcomes don’t deter everyone from drinking alcohol. These new findings point to a neurological explanation for why only some mice continue to drink alcohol even when it comes with negative consequences. “They found these differences in circuit activity before mice developed compulsive drinking behavior,” Mangieri said. “In other words, some mice had a biological predisposition that made them susceptible to developing alcohol drinking behaviors that are similar to humans with AUD.” The researchers said the work has important implications. It has potential as a biomarker of propensity to develop severe AUD based on electrical activity. Also, the discovery of this circuit’s role in compulsive drinking suggests that there may be novel pharmacological targets that could be identified and developed for the treatment of AUDs
3. According to paragraph 2, what is the nature of the compulsive behaviours of people with AUD?

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Without regular supplies of some hormones our capacity to behave would be seriously impaired; without others we would soon die. Tiny amounts of some hormones can modify our moods and our action, our inclination to eat or drink, our aggressiveness or submissiveness, and our reproductive and parental behavior. And hormones do more than influence adult behavior; early in life they help to determine the development of bodily form and may even determine an individual’s behavioral capacities. Later in life the changing outputs of some endocrine glands and the body’s changing sensitivity to some hormones are essential aspects of the phenomena of aging. Communication within the body and the consequent integration of behavior were considered the exclusive province of the nervous system up to the beginning of the present century. The emergence of endocrinology as a separate discipline can probably be traced to the experiments of Bayliss and Starling on the hormone secretion. This substance is secreted from cells in the intestinal walls when food enters the stomach; it travels through the bloodstream and stimulates the pancreas to liberate pancreatic juice, which aids in digestion. By showing that special cells secrete chemical agents that are conveyed by the bloodstream and regulate distant target organs or tissues, Bayliss and Starling demonstrated that chemical integration can occur without participation of the nervous system. William Bayliss and Ernest Henry Starling, two British physiologists, discovered and introduced the word hormone. In 1979, The Bayliss and Starling Society was founded as a forum for research scientists with specific interest in the chemistry, physiology and function of central and autonomic peptides. The Society also offered the travelling fellowship award for members who wanted to attend national and international academic conferences. Sometimes, the Society help schools to organize science fairs for secondary students and give them incentives to fall for related subjects. The term “hormone” was first used with reference to secretion. Starling derived the term from the Greek hormone, meaning “to excited or set in motion.” The term “endocrine” was introduced shortly thereafter, “Endocrine” is used to refer to glands that secrete products into the bloodstream. The term “endocrine” contrasts with “exocrine” which is applied to glands that secrete their products through ducts to the site of action. Examples of exocrine glands are the tear glands, the sweat glands, and the pancreas, which secretes pancreatic juice through a duct into intestine. Exocrine glands are also called duct glands, while endocrine glands are called ductless.
4. It can be inferred from the passage that, before the Bayliss and Starling experiments, most people believed that chemical integration occurred only ________ .

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What would be the most effect way of marketing our goods?

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John is studying hard. He doesn’t want to fail the exam.

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Architect Ricardo Rosa, who is working in the center of quite busy Batheaston, England, no longer has to deal with heavy traffic on his way to work. He has given up the road - now he canoes along the river between work and home. Before setting off on the three-kilometer journey to work in the nearby town of Batheaston, Ricardo puts on a special jacket and trousers over his suit so he doesn’t get wet. When he gets there, he leaves the canoe locked up with the bicycles outside his office. He began canoeing to work after he was lent a canoe by a colleague and found instructions on how to use it on the internet. The experiment has been so successful that Ricardo now says he won’t go back to driving or cycling. He says, “At first I was a bit nervous because I had never canoed before. But I’m getting much better. It’s been very windy and rainy recently and I’ve been alright. It makes the trip more exciting. I haven’t fallen into the water yet, but I’m sure I will one day and have to sit in my wet work clothes all day. Standing up to get in and out is the most dangerous point.” Some of the people he works with are now thinking of doing the same thing themselves. They already try to help the environment in other ways. The office has its own vegetable garden outside and one employee has left his home to live on a boat. Ricardo says, “I’m hoping they’ll join me. Canoeing takes longer than going by car, but it’s a lot more pleasant. It’s a great way of getting fit and breaking the routine. It feels like you’re on holiday.”  
2. The phrase "setting off" in the second paragraph is closest in meaning to________

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Most of the early houses built in America were suited to farm life, as it was not until cities became manufacturing centers that colonists could survive without farming as their major occupation. Among the earliest farmhouses in America were those built in Plymouth Colony. Generally they consisted of one large rectangular room on the ground floor, called a hall or great room and having a fireplace built into one of the walls, and a loft overhead. Sometimes a lean-to was attached alongside the house to store objects such as spinning wheels, firewood, barrels, and tubs. The furnishings in the great room were sparse and crudely built. Tabletops and chest boards were split or roughly sawed and often smoothed only on one side. Benches took the place of chairs, and the table usually had a trestle base so it could be dismantled when extra space was required. One or two beds and a six-board chest were located in one corner of the room. The fireplace was used for heat and light, and a bench often placed nearby for children and elders, in the area called the inglenook.
The original houses in Plymouth Colony were erected within a tall fence for fortification. However, by 1630 Plymouth Colony had 250 inhabitants, most living outside the enclosure. By 1640, settlements had been built some distance from the original site. Villages began to emerge throughout Massachusetts and farmhouses were less crudely built. Windows brought light into homes and the furnishings and décor were more sophisticated.
As more diversified groups of immigrants settled the country, a greater variety of farmhouses appeared, from Swedish long-style houses in the Delaware Valley to saltbox houses in Connecticut, Dutch-Flemish stone farmhouses in New York, and clapboard farmhouses in Pennsylvania. From Georgian characteristics to Greek revival elements, farmhouses of varied architectural styles and building functions populated the landscape of the new frontier.

Which of the following is not mentioned as part of the furnishings in farmhouses

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It is said that George Washington was one of the first to realize how important tire building of canals would be to the nation’s development. In fact, before he became the President, he headed the first company in the United States to build a canal, which was to connect the Ohio and Potomac rivers. It was never completed, but it showed the nation the feasibility of canals. As the country expanded westward, settlers in western New York, Pennsylvania, and Ohio needed a means to ship goods. Canals linking natural waterways seemed to supply an effective method.
In 1791, engineers commissioned by the state of New York investigated the possibility of a canal between Albany on the Hudson River and Buffalo on Lake Eric to link the Great Lakes area with the Atlantic seacoast. It would avoid the mountains that served as a barrier to canals from the Delaware and Potomac rivers.
The first attempt to dig the canal, to be called the Eric Canal, was made by private companies but only a comparatively small portion was built before the project was halted for lack of funds. The cost of the prospect was estimated $5 million, an enormous amount for those days. There was some on-again-off-again federal funding, but this time the War of 1812 put an end to construction. In 1817, DeWitt Clinton was elected Governor of New York and persuaded the state to finance and build the canal. It was completed in 1825, costing S2 million more than expected.
The canal rapidly lived up to its sponsors’ faith, quickly paying for itself through tolls. It was far more economical than any other form of transportation at the time. It permitted trade between the Great Lake region and the East coast, robbing the Mississippi River of much of its traffic. It allowed New York to supplant Boston, Philadelphia, and other eastern cities as the chief center of both domestic and foreign commerce. Cities sprang up along the canal. It also contributed in a number of ways to the Norths victory over the South in the Civil War.
An expansion of the canal was planned in 1849. Increased traffic would undoubtedly have warranted its construction had it not been for the railroads.

The word “warranted” in paragraph 5 is closest in meaning to

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Like high schools, American colleges are sometimes criticized for discarding requires courses and offering too many electives. In the mid-1980s, the Association of American Colleges issued a report that (1) ____________ teaching a body of common knowledge to all college students. A similar report, “Involvement in Learning,” issued by the National Institute of Education, concluded that the college curriculum had become “excessively work-related”. The report also (2) __________ that college education may no longer be developing in students “the shared values and knowledge” that traditionally bind Americans together. These reports coincided (3) ____________ a trend away from the liberal arts. Instead, students were choosing major fields designed to prepare them for specific jobs. In 1992, 51 percent of the bachelor’s degrees were conferred in the fields of business and management, communications, computer and sciences, education, engineering, and health sciences. This trend raises questions that apply to the educational philosophy of all industrialized countries. In an age of technological breakthroughs and highly (4) _______________ disciplines, is there still a need for the generalist with a broad background and well-developed abilities to reason and communicate? And if the answer to that question is yes, should society take steps to encourage its colleges and universities to produce more such generalists? Like their (5) ____________ in other countries, American educators continue to debate these questions

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Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a drive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper. The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 39 meters in seawater a diver is exposed to pressure of about 4 atmospheres. The pressure of the gases being breathed must equal the external pressure applied to the body,

otherwise breathing is very difficult. Therefore all of the gases in the air breathed by a scuba diver at 40 meter are present at five times their usual pressure. Nitrogen, which composes 80 percent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, nitrogen causes symptoms resembling alcohol intoxication, known as nitrogen narcosis. Nitrogen narcosis apparently results from a direct effect on the brain of the large amounts of nitrogen dissolved in the blood. Deep dives are less dangerous if helium is substituted for nitrogen, because under these pressures helium does not exert a similar narcotic effect.
As a scuba diver descends, the pressure of nitrogen on the lungs increases. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues The reverse occurs when the diver surfaces, the nitrogen pressure in the lungs falls and the nitrogen diffuses from the tissues into the blood, and from the blood into the lungs. If the return to the surface is too rapid, nitrogen in the tissues and blood cannot diffuse out rapidly enough and nitrogen bubbles are formed. They can cause severe pains, particularly around the joints.
Another complication may result if the breath is held during ascent. During ascent from a depth of 10 meters, the volume of air in the lungs will double because the air pressure at the surface is only half of what it was at 10 meters. This change in volume may cause the lungs to distend and even rupture. This condition is called air embolism.
To avoid this event, a diver must ascend slowly, never at a rate exceeding the rise of the exhaled air bubbles, and must exhale during ascent.

What should a diver do when ascending?

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Whether a species is endangered—meaning at risk of extinction—depends on which definition you use. The International Union for Conservation of Nature’s Red List of Threatened Species classifies an animal as endangered when its numbers in the wild have dropped so low that it’s at “extremely high risk” of extinction. Meanwhile, the United States’ Endangered Species Act of 1973 takes into consideration any destruction to a species’ habitat, whether it has been over-consumed, any disease or predation that threaten it, whether any other man-made factors put it in danger, and what policies currently exist to protect it. When members of the public or a state agency propose to the U.S. Fish & Wildlife Service or the National Marine Fisheries Service that a species be listed as endangered under the law, research and management plans are formed to help those species survive. It is illegal under the Endangered Species Act to capture, hunt, shoot, or otherwise harm an animal that’s listed as endangered. Sometimes, federal agencies decide that although a species could be considered endangered, other species are higher priorities. In those cases, the animal or plant gets limited protections. One animal whose numbers have increased through conservation is the bald eagle. There were only about 500 bald eagles in the continental United States in the 1960s because of pesticides that damaged the shells of their eggs. Conservation efforts including captive breeding programs, habitat protection, and a ban on the insecticide DDT helped the bald eagle’s numbers soar back into the thousands. Another is the giant panda, which was declared no longer endangered in 2016 thanks to 50 years of efforts to save it. U.S. Rep. John Dingell, who wrote the Endangered Species Act, argued that “only natural extinction is part of natural order.” Scientists believe that 227 species - including the grizzly bear, the peregrine falcon and the gray wolf - were saved from extinction in the first 33 years of the law’s existence. Still, critics argue that the act is expensive and ineffective because it protects so many species. Several federal courts have heard and rejected arguments that the Endangered Species Act is unconstitutional, and members of Congress have tried to weaken the law in small ways.
6. Which of the following statements is TRUE, according to the passage?

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How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone. The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection The toothbrush will be able to teach you to brush right (don’t forget the insides of the teeth!) and make sure you’re brushing long enough. “It’s kind of … like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor. The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart but also fun.” Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed. The company says the Kolibree will go on sale this summer, for $99 to $199, developing on features. The U.S. is the first target market. Serval says that one day, it’ll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.
3. The underlined word "They” in the passage refers to ____