16.()his sister, Jack is quiet and does not easily make friends with others.
A. Dislike
B. Unlike
C. Alike
D. Liking
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4. Passage Thirty-ThreeWe all know that DNA has the ability to identify individuals but, because it is inherited, there are also regions of the DNA strand which can relate an individual to his or her family (immediate and extended), tribal group and even an entire population.Molecular Genealogy (宗谱学)can use this unique identification provided by the genetic markers to link people together into family trees.Pedigrees (家谱)based on such genetic markers can mean a breakthrough for family trees where information is incomplete or missing due to adoption, illegitimacy or lack of records.There are many communities and populations which have lost precious records due to tragic events such as the fire in the Irish courts during Civil War in 1921 or American slaves for whom many records were never kept in the first place.The main objective of the Molecular Genealogy Research Group is to build a database containing over 100,000 DNA samples from individuals all over the world.These individuals will have provided a pedigree chart of at least four generations and a small blood sample.Once the database has enough samples to represent the world genetic make-up, it will eventually help in solving many issues regarding genealogies that could not be done by relying only on traditional written records.Theoretically, any individual will someday be able to trace his or her family origins through this database.In the meantime, as the database is being created, molecular genealogy can already verify possible or suspected relationships between individuals.“For example, if two men sharing the same last name believe that they are related, but no written record proves this relationship, we can verify this possibility by collecting a sample of DNA from both and looking for common markers (in this case we can look primarily at the Y chromosome (染色体),” explains Ugo Perego, a member of the BYU Molecular Genealogy research team.If two men suspected for some reason they have a common ancestor, ().
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44.Americans eat ()vegetables per person today as they did in 1910.
A. more than twice
B. as twice as many
C. twice as many as
D. more than twice as many
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1. Passage Twenty-EightOn November 19, 1863, Abraham Lincoln went to Gettysburg in Pennsylvania to speak at the National Soldiers Cemetery.The Civil War was still going on.There was much criticism of President Lincoln at the time.He was not at all popular.He had been invited to speak at Gettysburg only out of politeness.The principal speaker was to be Edward Everett, a famous statesman and speaker of the day.Everett was a handsome man and very popular everywhere.It is said that Lincoln prepared his speech on the train while going to Gettysburg.Late that night, alone in his hotel room and tired out, he again worked briefly on the speech.The next day Everett spoke first.He spoke for an hour and 57 minutes.His speech was a perfect example of the rich oratory of the day.Then Lincoln rose.The crowd of 15,000 people at first paid little attention to him.He spoke for only nine minutes.At the end there was little applause.Lincoln turned to a friend and remarked, “I have failed again.” On the train back to Washington, he said sadly, “That speech was a flat failure, and the people are disappointed”.Some newspapers at first criticized the speech, but little by little as people read the speech, they began to understand better.They began to appreciate its simplicity and its deep meaning.It was a speech which only Abraham Lincoln could have made.Today, every American school child learns Lincoln’s Gettysburg Address by heart.Now everyone thinks of it as one of the greatest speeches ever given in American history.In 1863, Abraham Lincoln was ().
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2. Passage ElevenDoctors say anger can be an extremely damaging emotion, unless you learn how to deal with it.They warn that anger can lead to heart disease, stomach problems, headaches, emotional problems and breast cancer.Anger is a normal emotion that we all feel from time to time.Some people express anger openly in a calm and reasonable way.Others burst with anger, screaming and yelling.But still others keep their anger inside.They cannot or will not express it.This is called (repressing)anger.For years some doctors claim that both repressing and expressing anger can be dangerous.They say that in both situations the brain of an angry person releases the same hormones (荷尔蒙).They spend the heart rate, raise blood pressure or sugar level in the blood.As a result, the angry person feels excited and is ready to react.The violent reaction may lead to high blood pressure.However, some other doctors argue that repressing anger is more dangerous to a person’s health than expressing it.They believe that those who keep their anger inside may face a greater danger of heart disease.Most doctors agree that it is important to learn how to deal with anger.They say the first step is to admit that you are angry and recognize the real cause of the anger, then decide if the cause is serious enough to get angry about.If so, you should not express your anger immediately and try to wait until your anger has cooled down, so that you are able to express yourself calmly and reasonably.They also believe that a good way to deal with anger is to find humor in the situation that has made you angry.After all, it is much healthier to laugh than to get angry.According to some doctors, ().
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45.I’m sure that reserves of coal here are ()to last for at least of half a century.
A. sufficient
B. efficient
C. effective
D. proficient
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31.Is this museum ()our German friends visited the day before yesterday?
A. which
B. much more
C. where
D. the one
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1. Passage Twenty-NineHow can we get rid of garbage (垃圾)? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today.Some people think that man might be able to solve both problems at the same time.They suggest using garbage as an energy source, and at the same time it can save the land to hold garbage.For a long time, people buried garbage or dumped (倾倒)it on empty land.Now, empty land is scarce.But more and more garbage is produced each year.However, garbage can be a good fuel to use.The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels.As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source.Burning garbage is not a new idea.Some cities in Europe and the United States have been burning garbage for years.The heat that is produced by burning garbage is used to boil water.The steam that is produced is used to make electricity or to heat nearby buildings.In Paris, France, some power plants burn almost 2 million metric tons of the city’s garbage each year.The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil.Our fossil fuel supplies are limited.Burning garbage might be one kind of energy source that we can use to help meet our energy needs.This method could also reduce the amount of garbage piling up on the earth.What two problems can man solve by burning garbage?
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5. Passage Twenty-NineHow can we get rid of garbage (垃圾)? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today.Some people think that man might be able to solve both problems at the same time.They suggest using garbage as an energy source, and at the same time it can save the land to hold garbage.For a long time, people buried garbage or dumped (倾倒)it on empty land.Now, empty land is scarce.But more and more garbage is produced each year.However, garbage can be a good fuel to use.The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels.As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source.Burning garbage is not a new idea.Some cities in Europe and the United States have been burning garbage for years.The heat that is produced by burning garbage is used to boil water.The steam that is produced is used to make electricity or to heat nearby buildings.In Paris, France, some power plants burn almost 2 million metric tons of the city’s garbage each year.The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil.Our fossil fuel supplies are limited.Burning garbage might be one kind of energy source that we can use to help meet our energy needs.This method could also reduce the amount of garbage piling up on the earth.The best title for the passage may be ().
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1. Passage Thirty-FiveTelevision has changed the lifestyle of people in every industrialized country in the world.In the United States, where sociologists have studied the effects, some interesting observations have been made.Television, although not essential, has become an important part of most people’s lives.It alters people’s ways of seeing the world; in many ways, it supports and sustains (维持)modern life.Television has become a baby-sitter, an introducer of conversations, the major transmitter of culture and a keeper of tradition.Yet when what can be seen on TV in one day is critically analyzed, it becomes evident that television is not a teacher but a sustainer; the poor quality of programming does not elevate (提高)people into greater understanding, but rather maintains and encourages the life as it exists.The primary reason for the lack of quality in American television is related to both the history of TV programming development and the economics of TV.Television in America began with the radio.Radio companies and their sponsors first experimented with television.Therefore, the close relationship which the advertisers had with radio programs became the system for American TV.Sponsors not only paid money for time within programs, but many actually produced the programs.Thus, in American society, television is primarily concerned with reflecting and attracting society rather than experimenting with new ideas.Advertisers want to attract the largest viewing audience possible.To do so requires that the programs be entertaining rather than educational, attractive rather than challenging.Television in America today remains, to a large extent, with the same organization and standards as it had thirty years ago.The hope for further development and true achievement toward improving society will require a change in the entire system.According to the author, American television is poor in quality because ().
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