The United States government wants to know what the public thinks about its findings on the safety of cloned animals. The Food and Drug Administration says meat and milk from clones of adult cattle, p 题目和参考答案——青夏教育精英家教网—

题目内容

The United States government wants to know what the public thinks about its findings on the safety of cloned animals.

The Food and Drug Administration says meat and milk from clones of adult cattle, pigs and goats are safe to eat. An F.D.A. official called them "as safe to eat as the food we eat every day." And when those clones reproduce sexually（有性繁殖）, the agency says, their offspring（后代） are safe to eat as well. But research on cloned sheep is limited. So the F.D.A. proposes that sheep clones not be used for human food.

The United States this year could become the first country to approve the sale of foods from cloned animals. First, however, the public will have ninety days to comment on three proposed documents. On December 28th the F.D.A. released a long report, called a draft risk assessment, along with two policy documents.

The agency says it must receive comments by April second. The F.D.A. seemed ready to act several years ago, but an advisory committee called for more research.

For now, the government will continue to ask producers to honor a request that they not sell foods from cloned animals.

Clones are still rare. They cost a lot and are difficult to produce.

The F.D.A. says most food from cloning is expected to come not from clones themselves, but from their sexually reproduced offspring. It says clones are expected to be used mostly as breeding animals to spread good qualities.

Public opinion studies show most Americans do not like the idea of food from cloned animals. But this research also shows the public knows little about cloning.

Cloning differs from genetic engineering. A cell taken from a so-called donor animals is grown into an embryo（胚胎）in the laboratory. Next, the embryo is placed into the uterus（子宫）of a female animal. If the process is successful, the pregnancy reaches full term and a genetic copy of the donor animal is born.

From the passage we know that .

A. foods from cloned animals are popular in America

B. cloned adult animals are safe to eat except sheep.

C. cloned animals will be easy to produce

D. most foods from cloning is expected to take place of other foods

The main purpose of the text is to .

A. tell a interesting story B. give some advice on foods

C. give a report D. compare different opinions

Who believe that foods from cloning are safe to eat?

A. Most Americans B. An advisory committee

C. Critics D. The F.D.A.

It can be inferred from the last paragraph that .

A. cloning has much in common with genetic

B. not every cell taken from a donor animal can grow into a genetic copy

C. the donor animal should be a female one

D. cloned animals grow faster than normal ones

【小题1】B

【小题2】C

【小题3】D

【小题4】B

解析:

【小题1】推理判断题。从文中第二段可推出。

【小题2】主旨大意题。本篇文章是关于克隆食物的安全问题的报道。

【小题3】事实细节题。从“The Food and Drug Administration says meat and milk from clones of adult cattle, pigs and goats are safe to eat.…”可知。

【小题4】推理判断题。从最后一段“If the process is successful, the pregnancy reaches full term and a genetic copy of the donor animal is born.”可知答案。

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I have a rule for travel: Never carry a map. I prefer to ask for directions

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45. A. kick B. pass C. carry D. hit

46. A. through B. into C. over D. past

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阅读下面短文，掌握其大意，从下列各各题所给的四个选项（A 、B、C和D）中，选出最佳选项，并在答题卷上将该项涂黑。
These days, it is common to see 5-gallon bottles of water being sent to homes. Supermarket 21
are filled with all kinds of bottled water from simple 22 bottles containing “pure spring water” to expensive foreign types of mineral water in glass bottles. In Europe, bottled water is as 23 as soft drinks which are widely accepted in the United States. People are not only interested in the different choices of drinks, but also in the taste of bottled water and its 24 value.
All bottled water on sale must 25 the content of the water on the bottle. Some companies 26
minerals to give the water a better taste. But the term “mineral water” is 27 , because all water, except specially purified water, contains minerals. 28 must be made to tell people clearly what kind of water people are exactly buying: spring water, mineral water, or purified water. For example, “spring water” will have to come from a(n) 29 spring.
Many people choose bottled water 30 tap water, because they 31 the safety of public drinking water. Some people worry about city water 32 . We need to pay close attention to the cleanliness of our drinking water. The government should be responsible for tap water 33 . It should be tested and checked 34 .
Keep in mind that bottled water is 35 . In many cases, you are paying for water that is not much different from tap water. If you are not sure of the safety of your tap water, have it 36 . A local health department can be of 37 . Compared with the cost of bottled water, the testing cost will be less expensive. Letting cold water 38 for a minute or so before taking a drink or using it in preparing a meal is a good way to 39 possible water pollution, especially if the water has been 40 for an hour or more.