The large firm where these are seen to be really necessary, 这家大公司不反对认定确有必要的改变. 题目和参考答案——青夏教育精英家教网—

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4.The large firm where these are seen to be really necessary, (opposed)

这家大公司不反对认定确有必要的改变。

4.is not opposed to making changes

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Rising temperatures, rising sea levels and other trends are having an effect on the world's sea turtles. All female turtles come ashore at nesting beaches, dig nests in the sand,lay their eggs and then return to the sea. Erosion of nesting beaches caused by rising sea level and more intense storms adds the potential for further dangers to nesting beaches where people，dogs and rats already prey on the eggs of marine turtles.

Climate change directly affects the reproduction of sea turtles in three ways. First, sea level rise will affect significant nesting beach areas on low-level sand beaches such as Bonaire, the Maldives and the Great Barrier Reef. Second, rising temperatures increase the chance that sand temperature will exceed the upper limit for egg incubation(姅化) ，which is 34t. Third,rising temperatures bias(使偏向) the sex ratio toward females because temperature during incubation determines the sex of the egg. Loggerhead turtle nests in Florida are already producing 90 per?cent females owing to high temperatures，and if warming raises temperatures by an additional

or more,no males will be produced there.

Adult feeding patterns are also affected by climate change. Sea grass beds are in decline, water temperature is higher on inter-tidal sea grass fiats, and coral reefs, typically feeding grounds for green turtles, are affected by bleaching(漂白) .

Sea turtles have existed for more than 100 million years and have survived ice ages. As a result, they may be able to respond to unfavorable nesting temperatures, by seeking out new nesting sites. It may however take decades or centuries for sea turtles to re-establish and stabilize their habitats，and steady human development of coastal areas makes the availability of new hab?itat for them very limited.

( ) 1. What will happen if sand temperature is higher than 34^3?

A. More females will be born. B. Turtle eggs will not hatch.

C. Females will lay fewer eggs. D. Newly-born turtles will die.

( ) 2. In what way does climate change affect adult turtles?

A. They can't find enough food. B. They have lost their habitat.

C. Their feeding patterns are affected. D. Their living habits are changed.

( ) 3. What can we learn about Loggerhead turtle nests in Florida?

A. They already have an imbalanced sex ratio.

B.They can hardly survive the high temperature.

C.No more males are produced now.

D.Most of them die young.

( ) 4. We can infer from the last paragraph that______ .

A.human development constantly threaten the survival the of sea turtles

B.climate change can't threaten the survival of sea turtles

C.sea turtles can get used to cold climate

D.it's easy for sea turtles to find new habitat

For thousands of years，mankind has bred plants and animals to create more desired and useful plants and animals. For instance, modem corn has been bred to such a large size that it is no longer able to reproduce without man's assistance. Modem dairy cows produce too much milk;because if they are not often drained of milk,they could leak,burst, become infected, and possibly die. Furthermore, most domesticated dogs cannot survive in the wild even with special training. Since natural evolution is extremely slow and mankind's selective breeding pro?grams only take a few generations to produce a completely new species，natural evolution has al?ready taken a backseat to mankind's breeding programs.

Additionally，mankind has successfully killed off several species all together. For instance， there are no more European wolves in existence and mammoths probably become extinct because of mankind. Even certain diseases have been permanently eradicated(根除) from the planet, and dozens of other diseases will soon be too. Again, natural evolution did not cause most of the ex?tinctions during humanity's reign.

Currently, scientists are creating new species with desired characteristics in the lab signifi?cantly faster than natural evolution creates new species. In a single generation, new species can be artificially created and destroyed，while natural evolution could take thousands of years to do the same but only haphazardly(4禺然地) .Scientists are even able to replace flawed(有缺陷的) or damaged genes with different genes to attempt to cure genetic defects. This is something that natural evolution could possibly never correct.

Eventually scientists will be able to enhance even people. For example, imagine not only correcting your eyesight with gene therapy，but also ensuring that all of your descendants do not inherit your old genes of poor eyesight too. Scientists will one day be able to enhance the mem?ory and intelligence of your children，so that they will do better in school and achieve more in life. Doctors and scientists will be able to customize babies before they are born just like picking options at a car dealership.

In the near future，natural evolution in the genetic code of any species can be quickly fixed if desired. As a result, natural evolution is doomed.

( ) 1. The underlined word "backseat" probably means .

A. powerful assistance B. important part

C. bad fortune D. secondary position

( ) 2. We can learn from the passage that .

A.artificial evolution can benefit the mankind

B.humans' flaws won't be inherited in future

C.natural evolution can't change species' nature

D.artificial evolution helps choose human sexes

( ) 3. Through the passage the author mainly wants to tell the readers that .

A.natural evolution survives strongly

B.natural evolution is almost dead

C.artificial evolution brings humans interests

D.artificial evolution causes species' extinction

( ) 4. We can infer from the passage that .

A. artificial evolution is the future B. artificial evolution causes mess

C.natural evolution causes species to die D. natural evolution will completely stop

Host;

Tonight is New Year's Eve. Many people will attend New Year's parties where they will drink alcohol. A listener in Vietnam wrote to ask why a person in the United States must be at least twenty-one years old to do this legally. Nguyen Hoang Phong noted that eighteen years is the legal age for drinking alcohol in most countries. Here is Faith Lapidus with our answer.

Faith Lapidus：

Discussing the drinking age in the United States can lead to an argument. I will try to ex?plain both sides of this issue.

In nineteen-eighty-four，Congress passed a measure called the National Minimum Drinking Age Act. President Ronald Reagan signed the measure into law. It bars people in the United States from drinking alcohol unless they are twenty-one years of age or older. States must obey the law or risk losing federal money for building roads and road repairs. The measure was the result of work by several lawmakers and groups such as Mothers Against Drunk Driving.

Last July，that group and members of Congress celebrated the twentieth anniversary of the law. They praised the measure as one of the most effective anti-drunk driving laws ever passed. They said that twenty-thousand lives have been saved since its passage. However, some oppo?nents of the measure say it did not save anyone. They say young people who want to drink will find a way to get alcohol. They also reject the number of young people reportedly saved by the law. They say fewer young people are drinking now than twenty years ago.

Other people say the National Minimum Drinking Age Act is not fair. They say a young person can join the military and fight in a war at age eighteen. However, they are still not per?mitted to drink alcohol until they are twenty-one.

Many Americans would like to change the law to make eighteen the age when a person can drink alcohol. But just as many want to keep the drinking age at twenty-one.

The question of a legal drinking age involves ideas of freedom，responsibility，religion， politics and the rights of parents. It is a question that will be argued in the United States for many years to come.

( ) 1. The writer's purpose in writing the text is to .

A. discuss the drinking age in America

B. answer a question

C. show us the argument in America

D. call up people's memory

( ) 2. Which of the following statements is true according to the text?

A. All the Americans think that the law is effective.

B. It was President Ronald Reagan that made the law come into effect.

C. It is believed that twenty-thousand lives have been saved since the law was signed.

D. Only those who are over twenty years old in the US can drink alcohol legally.

( ) 3. What is "Mothers Against Drunk Driving"？

A. A department of the Government.

B. A scientific research institute.

C. A group of lawmakers.

D. A kind of social organization.

( ) 4. What can we infer from the passage?

A. The state in the US has no right to change the law of the Federal Government.

B. If a man was not at least twenty-one years old,he wouldn't get any alcohol in the US.

C. The young people in the USA become mature later than those of the other countries.

D. It will be not easy to change the law of the drinking age in a short time.

6. __________________________ permitted me to come in. (it)

是门卫批准我进来的。

2.The Recommendations point out that governments can making their reproductive decisions in a responsible way. (assist)

建议案指出各国政府可以以负责的态度去帮助其人民作出有关生育的决定。

9.The night before last,just before dinner, while my father was looking through the evening paper, he suddenly . (let)

前天晚上，就在晚饭前，我父亲在看晚报时，突然惊呀地喊了一声。

9. there is on report about their extinction, their output is greatly reduced, (spite)

尽管还没有鱼种绝迹的报道，但是它们的数量也大量减少。

9.They the essential thinking work is going to be done by the teacher, (tend)

他们往往认为必不可少的思考问题是由老师去做的。

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