6．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 （提议） 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．
5．From the passage we know thatA．
A．cloned adult animals are safe to eat except sheep
B．foods from cloned animals are popular in America
C．cloned animals will be easy to produce
D．most foods from cloning is expected to take place of other foods
6．Who believe that foods from cloning are safe to eat？C
A．Critics
B．An advisory committee
C．The F．D．A
D．Most Americans
7．It can be inferred from the last paragraph thatB．
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
8．The main purpose of the text is toD．
A．tell an interesting story
B．give some advice on foods
C．compare different opinions
D．give a report．
分析 本篇文章是关于克隆食物的安全问题的报道．
解答 5．A，细节理解题，根据句子The Food and Drug Administration says meat and milk from clones of adult cattle，pigs and goats are safe to eat和But research on cloned sheep is limited．So the F．D．A．proposes （提议） that sheep clones not be used for human food．可知，克隆成年的动物是可以食用的，除了羊，故答案为A．
6．C，细节理解题，根据句子"The Food and Drug Administration says meat and milk from clones of adult cattle，pigs and goats are safe to eat．…"可知美国食品和药品管理局告诉公众，克隆动物制品可以安全食用，故答案为C．
7．B，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"如果这个过程成功的话"，怀孕的动物的孕期就会自然成熟．由此判断选B，这个过程也有失败的时候．
8．D，主旨大意题，本篇文章是关于克隆食物的安全问题的报道，故答案为D．
点评 解答任务型阅读理解题，首先对原文材料迅速浏览，掌握全文的主旨大意．因为阅读理解题一般没有标题，所以，速读全文，抓住中心主旨很有必要，在速读的过程中，应尽可能多地捕获信息材料．其次，细读题材，各个击破．掌握全文的大意之后，细细阅读每篇材料后的问题，弄清每题要求后，带着问题，再回到原文中去寻找、捕获有关信息．最后，要善于抓住每段的主题句，阅读时，要有较强的针对性．对于捕获到的信息，要做认真分析，仔细推敲，理解透彻，只有这样，针对题目要求，才能做到稳、准．
