高二英语人教版选修8unit2课时分层作业精选(含答案)

课时分层作业(四)Section Ⅰ

[高考题型练习提能力]

Ⅰ.阅读理解

A

The United States government has decided that food

from cloned cattle，pigs and goats is safe to eat.The Food and

Drug Administration also says it found no risk in meat and

milk from cloned animals.

The F．D.A.had looked at studies for several years before it announced its decision in a final report this month.The United States Department of Agriculture supported the findings.But it says time is needed to clear the way for marketing meat and milk from clones.

The F．D.A.will not require any product to be registered as coming from clones.A producer would need to label(标注) a product“clone­free”．The agency says that could be misunderstood because the food is not different from other food.

But activists argue that the F．D.A.based its decision on incomplete research into possible risks.The Center for Food Safety criticized the use of studies supplied by cloning companies.Animal rights activists point out that cloning attempts often fail.They say cloning is cruel and can lead to suffering.

Congress(国会) has been trying to get the F．D.A.to do more studies.But the agency noted that experts in New Zealand and the European Union had come to the same findings about the safety of food from clones.Japan and South Korea say they want to study it further before taking action.

Products from cloning may not be widely used for several years.Clones cost much，which is why they are not widely used for feeding.The Agriculture Department says few clones will ever become food.Their traditionally raised animals would enter the food supply instead.

【语篇解读】本文讲述了美国食品药品监督管理局在宣布一些克隆动物可以作为食品后引发的争论。

1．What is the best title for this passage?

A．Is Food from Cloned Animals Safe?

B．A New Clone Policy

C．A Big Danger—Cloned Food

D．Cloned Products—A Terrible Choice

A[主旨大意题。全文是人们对于克隆动物作为食物这个话题的争论。]

2．All the following are sure of the safety of cloned products EXCEPT ________.

A．New Zealand B．Japan

C．the USA D．the European Union

B[细节理解题。根据第五段第二、三两句可知美国、新西兰、欧盟有同样的发现，而日本需要进一步的研究。]

3．Why are products from cloning not widely used for feeding?

A．Because cloning attempts often fail.

B．Because they are not safe to eat.

C．Because cloning is cruel.

D．Because they are expensive.

D[推理判断题。根据最后一段提到“Products from cloning may not be widely used for several years.Clones cost much，which is why they are not widely used for feeding.”可知原因是克隆产品太过昂贵。]

4．Where can you probably see the passage?

A．In a novel.B．In a newspaper.

C．In a travel leaflet.D．In a notice on the wall.

B[推理判断题。本文关于美国食品药品监督管理局在宣布一些克隆动物可以作为食品后引发的争论，时效性较强，故出现在报纸上。]

B

Authors Kyle Kurpinski and Terry D．Johnson pretty much have me convinced that human cloning is quite possible and is a future certainty.Kurpinski and Johnson are both bioengineering experts；unlike similar scientists you have seen in the movies，they both have a sense of humor.What surprises me is that Kurpinski and Johnson are able to take something as complicated as DNA and make it understandable.

The book Ho w to Defeat Your O w n Clone teaches us what is now known as DNA­encoded(编码)，how that happens，and why people with similar DNA don't look