Read the text below and decide which answer (A,B,C, or D) best fits each space.
The next generation of telephone users will probably laugh (1) _______ we explain how we  used to stand next to a wall in the kitchen to (2) _______ a phone call. Mobile  communications, already highly advanced compared with a decade ago, will completely  change communications in the next few years. (3) _______ there are millions of people using  mobile phones, most people know (4) _______ about the mobile telecommunications industry  and its technology. 
There are three types of mobile phone. These are hand portables, pocket-sized hand portables and transportables. The smallest and most popular are the pocket-sized hand portables. These  work on rechargeable batteries, which allow an (5) _______ of up to 80 minutes'  conversation. Mobiles that are fitted permanently in a vehicle do not (6) _______ on separate  batteries. They require an external aerial on the vehicle. This can mean a stronger signal with  clearer (7) _______. Transportables have a high power capability and can be used (8)  _______ anywhere. They come with powerful battery packs for longer, continuous use and  may also be put (9) _______ a vehicle, using its electrics. They (10) _______ to be bulkier  than hand portables. 

Câu 8.....................

 Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage:

"A water polo team consists (1)…… seven players - a goalkeeper and six field players. The goalkeeper must defend the goal without hanging onto the goal or using the side of the pool. Each team also may have six (2)…..  players. With the exception of the goalkeeper, each player may use only one hand at a time in (3) …… the ball. Players wear caps of different colors for team (4)…. ; the official rules stipulate white for one team, blue for the other, and red caps for the goalies.
 A match requires two referees, two goal judges, two timekeepers, and two recorders. Games are divided (5) …..four periods of 7 minutes each, with a 2-minute interval between periods. Play begins when the (6)….. , with each team spread out along its own goal line, throws the ball into play at a line halfway between the two teams. The players race toward the ball, and the team that gains (7)…… then attempts to advance it toward the opponent's goal by (8)….. it from teammate to teammate. Players can also swim with the ball by pushing it along the water surface with their bodies as they swim.
 Players may not use more than one hand at a time and may not (9)…. clenched fists. No players - except the goalie, when defending a goal in a pool with a shallow end - may walk on or use the bottom of the pool, (10)….. may they take the ball beneath the surface of the water. Players may not impede the free-limb movement of another player unless that player holds the ball."

6. Play begins when the (6)….. , with each team spread out along its own goal line, throws the ball into play at a line halfway between the two teams.

Read the text below and decide which answer (A,B,C, or D) best fits each space.
THE HISTORY OF FOOTBALL

Football, or soccer, which is so popular all over the world, dates back to the Middle Ages.  At  that  (58)  ……..  it  was  very  different   from  the  game  we  play  today.  Any number of players could (59) …….. part and the matches usually developed into a free- for-all. In its modern (60) …….. , football is less than two hundred years old.

In 1846, the  first  rules  to  govern  the  game were  drawn (61) …….. at  Cambridge University. The number of players was (62) …….. to 11 per side, which made things much more (63) …….. than before. Later, in 1863, the Football Association was (64)…….. up to help promote the game in Britain.

The game is played on a grass or artificial (65) …….. with a goal net at each end. The (66) …….. is to move the ball around the field, (67) …….. the feet or head, until a player is in a (68) …….. to put the ball into the net and score a goal.

Professional football is not only the most popular (69) …….. sport in the world, (70)…….. also more people actually play football themselves than any other team sport. In 1904 FIFA, the world governing (71) …….. of football, was founded. It organizes the World Cup tournament every four years. Other kinds of football are popular, but less (72) …….. , for example American Football and Australian Rules Football.

58.................

For more than six million American children, coming home after school means coming  back to an empty house. Some deal with the situation by watching TV. Some may hide. But all of  them have something in common. They spend part of each day alone. They are called “latchkey children”. They are children who look after themselves while their parents work. And their bad  condition has become a subject of concern. 
Lynette Long was once the principal of an elementary school. She said, “We had a school rule against wearing jewelry. A lot of kids had chains around their necks with keys attached. I was  constantly telling them to put the keys inside shirts. There were so many keys; it never came to  my mind what they meant.” Slowly, she learned that they were house keys. She and her husband began talking to the children who had keys. They learned of the effect working couples and single parents were having on their children. Fear was the biggest problem faced by children at home alone. One in three latchkey children the Longs talked to reported being  frightened. Many had nightmares and were worried about their own safety. The most common way latchkey children deal with their fears is by hiding. They may hide  in a shower stall, under a bed or in a closet. The second is TV. They often turn the volume up. It’s  hard to get statistics on latchkey children, the Longs have learned. Most parents are slow to admit  that they leave their children alone.

What do latchkey children suffer most from when they are at home alone?

Read the text below and decide which answer (A,B,C, or D) best fits each space.
The heart has long been considered to be (1) feelings of love dwell. In love songs throughout  the ages, love almost always goes together (2) the heart. The heart has continuously been  viewed (3) the place where love begins and develops. Even the Bible gives (4) to love and the  heart. 
The role of the heart in love must come from what happens to it when a person feels strongly (5) to someone. The strong feelings (6) the other person, especially in the early stages of a relationship, have the results that the heart starts beating faster and  breathing starts speeding (7) . 
According to psychologists, a love relationship is a situation that involves a lot of stress and the body reacts to this by getting ready to face the unknown. This has been called the  "fight or flight" (9) accelerates and (10) , meeting danger by fighting it or running away. So  with love, the heart becomes quick. 

Câu 10.......................

 Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage:

"Many outdoor (1)….. enjoy canoeing or kayaking (2) ….. recreation on ponds, lakes, and rivers. Some people use canoes and kayaks to travel across bodies of water to remote camping locations. They (3)…. Their supplies, such as tents, sleeping bags, and food, in their boats. The Boundary Waters Canoe Area Wilderness and Voyageurs National Park, both (4)…..  along the border between Minnesota and Ontario, Canada, are two of the most popular canoeing areas in North America.
 Whitewater canoeing and kayaking on fast-flowing rivers is another popular activity. The (5)….. whitewater refers (6) the burbling foam created when fast-moving water spills over and around rocks or other (7)….. Whitewater enthusiasts maneuver their boats around rocks, logjams and other natural obstacles. If the current and obstacles (8)…… a passage (9)…. difficult to navigate, a canoeist might make a portage, or carry the canoe (10)…..  land for a short distance, thereby avoiding the danger."

1. Many outdoor (1)….. enjoy canoeing

Read the passage below and choose one correct answer for each question.

There is very little documentation about the origins of water polo. It is known, however, that the sport originated in the rivers and lakes of mid-19th century England as an aquatic version of rugby. Early games used an inflated rubber ball that came from India known as a "pulu" (the single Indian word for all "balls"). Pronounced "polo" by the English, both the game and the ball became known as "water polo". To attract more spectators to swimming exhibitions, the London Swimming Association designed a set of water polo rules for indoor swimming pools in 1870. At first, players scored by planting the ball on the end of the pool with both hands. A favorite trick of the players was to place the five-to-nine inch rubber ball inside their swimming suit and dive under the murky water, they would then appear again as close to the goal as possible. The introduction of the rules by Scottish players changed the nature of water polo. It became a game that emphasized swimming, speed and passing. Scottish rules moved from a rugby variant to a soccer style of play. Goals became a cage of 10x 3 feet and a goal could be scored by being thrown. Players could only be tackled when they "held" the ball and the ball could no longer be taken under water. The small rubber ball was replaced by a leather soccer ball. If the player came up too near the goal, he was promptly jumped on by the goalie, who was permitted to stand on the pool deck. Games were often nothing more than gang fights in the water as players ignored the ball, preferring underwater wrestling matches that usually ended with one man floating to the surface unconscious. Water polo was first played in the USA in 1888. The game featured the old rugby style of play which resembled American football in the water. "American style" water polo became very popular and by the late 1890s was played in such venues as Madison Square Garden and Boston's Mechanics Hall, attracting 14,000 spectators to national championship games.

Water polo became popular in America in _______.

 Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage:

"A water polo team consists (1)…… seven players - a goalkeeper and six field players. The goalkeeper must defend the goal without hanging onto the goal or using the side of the pool. Each team also may have six (2)…..  players. With the exception of the goalkeeper, each player may use only one hand at a time in (3) …… the ball. Players wear caps of different colors for team (4)…. ; the official rules stipulate white for one team, blue for the other, and red caps for the goalies.
 A match requires two referees, two goal judges, two timekeepers, and two recorders. Games are divided (5) …..four periods of 7 minutes each, with a 2-minute interval between periods. Play begins when the (6)….. , with each team spread out along its own goal line, throws the ball into play at a line halfway between the two teams. The players race toward the ball, and the team that gains (7)…… then attempts to advance it toward the opponent's goal by (8)….. it from teammate to teammate. Players can also swim with the ball by pushing it along the water surface with their bodies as they swim.
 Players may not use more than one hand at a time and may not (9)…. clenched fists. No players - except the goalie, when defending a goal in a pool with a shallow end - may walk on or use the bottom of the pool, (10)….. may they take the ball beneath the surface of the water. Players may not impede the free-limb movement of another player unless that player holds the ball."

8. to advance it toward the opponent's goal by (8)….. it from teammate to teammate.

Read the text below and decide which answer (A,B,C, or D) best fits each space.
The well-being of America's rural people and places depends upon many things - the availability of good-paying jobs; (1) to critical services such as education, health care, and communication; strong communities; and a healthy natural environment. And, (2) urban America is equally dependent upon these things, the challenges to well-being look very  different in rural areas than in urban areas. Small-scale, low-density settlement (3) make it  more costly for communities and businesses to provide critical services. Declining jobs and  income in the natural resource-based industries that many rural areas depend on (4) workers  in those industries to find new ways to make a living. Low-skill, low-wage rural  manufacturing industries must find new ways to challenge the increasing number of (5)  competitors. Distance and remoteness impede many rural areas from being connected to the  urban centers of economic activity. Finally, changes in the availability and use of natural  resources located in rural areas (6) the people who earn a living from those resources and  those who (7) recreational and other benefits from them. Some rural areas have met these challenges successfully, achieved some level of prosperity, and are ready (8) the challenges of the future. Others have neither met the current challenges nor positioned themselves for the future. Thus, concern for rural America is real.  And, while ruralAmerica is a producer of critical goods and services, the (9) goes beyond economics. Rural America is also home to a fifth of the Nation'speople, keeper of natural  amenities and national treasures, and safeguard of a/an (10) part of American culture,  tradition, and history. 

Câu 1......................

The habits of those who constantly play video games are very important to people  working in video- game industry. If video games are going to be one of the most attractive  features of future interactive systems, it is essential for producers to know what types of games  to make, how best to present such games on interactive video and how to ensure that such  games maintain their fascination for people. Above all, it is vital to build up detailed profiles  of people who are addicted to video 
games. 
Until recently, the chief market for video games has been boys aged eight to fifteen. The  fascination for interactive video games is seen in its purest form in this group. Video games  appeal to some deep instinct in boys who find it impossible to tear themselves away from them.  Schoolwork is ignored, health is damaged and even eating habits are affected. Girls of the same  age, however, are entirely different, demonstrating far greater freedom from the hold of video  games. Quite simply, they can take video games in their stride, being able to play them when they  want and then leave them alone. 

The people who are most attracted to video games are ..........................

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.

   Traditionally in America, helping the poor was a matter for private charities or local governments. Arriving immigrants depended mainly on predecessors from their homeland to help them start a new life. In the late 19th and early 20th centuries, several European nations instituted public-welfare programs. But such a movement was slow to take hold in the United States because the rapid pace of industrialization and the ready availability of farmland seemed to confirm the belief that anyone who was willing to work could find a job.

   Most of the programs started during the Depression era were temporary relief measures, but one of the programs Social Security – has become an American institution. Paid for by deductions from the paychecks of working people, Social Security ensures that retired persons receive a modest monthly income and also provides unemployment insurance, disability insurance, and other assistance to those who need it. Social Security payments to retired persons can start at age 62, but many wait until age 65, when the payments are slightly higher. Recently, there has been concern that the Social Security fund may not have enough money to fulfill its obligations in the 21st century, when the population of elderly Americans is expected to increase dramatically. Policy makers have proposed various ways to make up the anticipated deficit, but a long-term solution is still being debated. In the years since Roosevelt, other American presidents have established assistance programs. These include Medicaid and Medicare; food stamps, certificates that people can use to purchase food; and public housing which is built at federal expense and made available to persons on low incomes. Needy Americans can also turn to sources other than the government for help. A broad spectrum of private charities and voluntary organizations is available. Volunteerism is on the rise in the United States, especially among retired persons. It is estimated that almost 50 percent of Americans over age 18 do volunteer work, and nearly 75 percent of U.S. households contribute money to charity.

The Social Security program has become possible thanks to ______.

Read the text below and decide which answer (A,B,C, or D) best fits each space.
The heart has long been considered to be (1) feelings of love dwell. In love songs throughout  the ages, love almost always goes together (2) the heart. The heart has continuously been  viewed (3) the place where love begins and develops. Even the Bible gives (4) to love and the  heart. 
The role of the heart in love must come from what happens to it when a person feels strongly (5) to someone. The strong feelings (6) the other person, especially in the early stages of a relationship, have the results that the heart starts beating faster and  breathing starts speeding (7) . 
According to psychologists, a love relationship is a situation that (8) a lot of stress and the body reacts to this by getting ready to face the unknown. This has been called the  "fight or flight" (9) accelerates and (10) , meeting danger by fighting it or running away. So  with love, the heart becomes quick. 

Câu 6....................

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.

   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication – having a mobile phone shows that they are cool and connected.

   The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

   On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn’t remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer’s doctor didn’t agree.

   What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

   As the discussion about their safety continues, it appears that it’s best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it’s wise not to use your mobile phone too often.

The most suitable title for the passage could be ______.

Choose the letter A, B, C or D to complete the passage below

Football, also called association football or soccer, game …(6)…which two teams of 11 players, using any part of their bodies …(7)…their hands and arms, try to maneuver the ball into the opposing team’s goal. Only the goalkeeper is permitted to handle the ball and may do so only within the penalty area surrounding the goal. The team that scores more goals wins.

Football is the world’s most popular ball game in numbers of participants and …(8)…. Simple in its principal rules and essential equipment, the sport can be played almost anywhere, …(9)…official football playing fields (pitches) to gymnasiums, streets, school playgrounds, parks, or beaches. Football’s governing body, the Fédération Internationale de Football Association (FIFA), estimated that at the turn of the 21st century there were …(10)… 250 million football players and over 1.3 billion people “interested” in football; in 2010 a combined television audience of more than 26 billion watched football’s premier tournament, the quadrennial month-long World Cup finals.

Football, also called association football or soccer, game …(6)…which two teams of 11 players.

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.

   In the 1960s, The Beatles were probably the most famous pop group in the whole world. Since then, there have been a great many groups that have achieved enormous fame, so it is perhaps difficult now to imagine how sensational The Beatles were at that time. They were four boys from the north of England and none of them had any training in music. They started by performing and recording songs by black Americans and they had some success with these songs. Then they started writing their own songs and that was when they became really popular. The Beatles changed pop music. They were the first pop group to achieve great success from songs they had written themselves. After that it became common for groups and singers to write their own songs. The Beatles did not have a long career. Their first hit record was in 1963 and they split up in 1970. They stopped doing live performances in 1966 because it had become too dangerous for them - their fans were so excited that they surrounded them and tried to take their clothes as souvenirs! However, today some of their songs remain as famous as they were when they first came out. Throughout the world, many people can sing part of a Beatles song if you ask them.

The tone of the passage is that of __________

Fill in each numbered blank with one suitable word or phrase

Rowing is a sport in which athletes race against each other on river, lakes or on the ocean, (1) _____ on the type of race and the discipline. The boats are propelled by the reaction forces on the oar blades (2) _____ they are pushed against the water. The sport can be both recreational, focusing (3)____ learning the techniques required, and competitive where overall fitness plays a large role. It is also one of (4) _____ oldest Olympic sports. In the United States, Australia and Canada, high school and collegial rowing is sometimes referred to as crew.

(5) _____ rowing, the athlete sits in the boat facing backwards, towards the stern, and uses the oars which are held in (6) ____ by the oarlocks to propel the boat forward, towards the bow. It is a demanding sport requiring strong core balance as well as physical (7) _____ and cardiovascular endurance.

Since the action of rowing (8) _____ fairly popular throughout the world, there are many different types of (9) _____. These include endurance races, time trials, stake racing, bumps racing, and the side-by-side format used in the Olympic Games. The many different formats are a result of the long (10) _____ of the sport, its development in different regions of the world, and specific local requirements and restrictions.

(5) ________

Read the text below and decide which answer (A,B,C, or D) best fits each space.
THE HISTORY OF FOOTBALL

Football, or soccer, which is so popular all over the world, dates back to the Middle Ages.  At  that  (58)  ……..  it  was  very  different   from  the  game  we  play  today.  Any number of players could (59) …….. part and the matches usually developed into a free- for-all. In its modern (60) …….. , football is less than two hundred years old.

In 1846, the  first  rules  to  govern  the  game were  drawn (61) …….. at  Cambridge University. The number of players was (62) …….. to 11 per side, which made things much more (63) …….. than before. Later, in 1863, the Football Association was (64)…….. up to help promote the game in Britain.

The game is played on a grass or artificial (65) …….. with a goal net at each end. The (66) …….. is to move the ball around the field, (67) …….. the feet or head, until a player is in a (68) …….. to put the ball into the net and score a goal.

Professional football is not only the most popular (69) …….. sport in the world, (70)…….. also more people actually play football themselves than any other team sport. In 1904 FIFA, the world governing (71) …….. of football, was founded. It organizes the World Cup tournament every four years. Other kinds of football are popular, but less (72) …….. , for example American Football and Australian Rules Football.

68.....................

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.

   Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication – having a mobile phone shows that they are cool and connected.

   The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

   On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn’t remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer’s doctor didn’t agree.

   What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

   As the discussion about their safety continues, it appears that it’s best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it’s wise not to use your mobile phone too often.

Doctors have tentatively concluded that cellphones may ________

Read the following passage and choose the best answer for each blank.

As well as being a necessary life-saving skill, swimming also (26)________us with a source of great pleasure and relaxation. Swimming, as well as other water sports like diving, surfing or just floating on your back, are some of the best ways to have (27)________and keep fit at the same time. Water sports are enjoyable for people of (28)________ages and even babies can learn to swim.

For elderly people or (29)________with physical handicaps, swimming provides gentle, yet effective exercise. Swimming for fitness and recreation has been popular (30) ________the earliest times, for instance in ancient Egypt, Greece and Roma. Swimming competitions developed in the nineteenth century and swimming races were (31)_______ in the first of the modern Olympic Games in 1896. Now water sports are (32)________ all over the world and most towns have at least one swimming pool.

Most water sports - swimming, surfing and water-skiing, etc, take (33)________on the surface of the water, but scuba divers explore deep below the waves.

There they can find fascinating sea creatures and strange rockformations. Some archaeologists are divers. (34)________search the seabed for wrecks of ships sunk hundreds of years ago which (35)________ objects that show how people lived in ancient times.

(34)________

Walt Disney was born in 1901 in Chicago, but soon moved to a small farm near Marceline, Missouri. From this rural and rather humble beginning he later became one of the most famous and beloved motion-picture producers in history. Although he died in 1966, his name and artistic legacy continue to influence the lives of millions of people throughout the world.
After several years of barely making ends meet as a cartoon artist operating from his Los Angeles garage, Disney had his first success in 1928, with his release of a Mickey Mouse cartoon. Throughout the next decade, he continued to produce a number of cartoons, and develop more of his highly profitable and enduring creations, such as Donald Duck and Pluto. In the late 1930s, he issued full-length cartoon film. Snow White became an instant commercial and critical success. This was only the first of many films, both animated and not, produced by Disney and his studio.
But as renowned as Disney name is for cartoon and monies, it is probably best known for a string of spectacular amusement and theme parks. Starting with California's Disneyland in 1955 and culminating with the fantastically successful Disney World and EPCOT Center in Florida, Disney became a household name. In recent years, the theme park concept became international, with openings in Toyo and Paris. With the continuing success of Disney, the creation of future theme park are under discussion.

According to the passage, which of the following is true?

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 from 36 to 42.
A study was set up to examine the old marriage advice about whether it's more important to be happy or to be right. Couples therapists sometimes suggest that in an attempt to avoid constant arguments, spouses weigh up whether pressing the point is worth the misery of marital discord. The researchers from the University of Auckland noticed that many of their patients were adding stress to their lives by insisting on being right, even when it worked against their well-being.
The researchers then found a couple who were willing to record their quality of life on a scale of 1 to 10. They told the man, who wanted to be happy more than right, about the purpose of the study and asked him to agree with every opinion and request his wife had without complaint, even when he profoundly didn't agree. The wife was not informed of the purpose of the study and just asked to record her quality of life.
Things went rapidly downhill for the couple. The man's quality-of-life scores fell, from 7 to 3, over the course of the experiment. The wife's scores rose modestly, from 8 to 8.5, before she became hostile to the idea of recording the scores. Rather than creating harmony, the husband's agreeableness led to the wife becoming increasingly critical of what he did and said (in the husband's opinion). After 12 days he broke down, and the study was called off because of severe adverse outcomes."
The researchers concluded, shockingly, that humans need to be right and acknowledged as right, at least some of the time, to be happy. They also noted this was further proof that if given too much power, humans tend to "assume the alpha position and, as with chimpanzees, they become very aggressive and dangerous." It is often said that there can be no peace without justice, and that's true of domestic sphere.
Obviously the results are to be taken with extreme caution, since this was just one couple with who-knows-what underlying issues beforehand. But the study's chief author, Dr. Bruce Arroll, maintains that the question of happiness vs. rightness, theoretically, could be settled by scientific inquiry with a wider sample. "This would include a randomized controlled trial,” he says. "However, we would be reluctant to do the definitive study because of the concern about divorce."

Which of the following can be inferred from paragraph 5?