A
There are three reasons why I don't think that we are ready for cloning. Firstly, we don't know exactly what the consequences of cloning would be. For example, if scientists cloned a man, they might know what he would look like, but they wouldn't know his quality. What would happen if scientists cloned another Hitler or others like him? Do you really think we would survive if this became a reality?
Secondly, cloning raises many ethical questions. Look back at the cloned man that has been presented and ask yourself these questions：
“Do you really think that he would be a man？”
“Who would be responsible for him？”
“Do you think he should have the same rights as we have？”
I don't think that we can answer these questions now.
Lastly, we don't know exactly what the meaning of life is. In my opinion, creating life is the duty of nature, and we must not interfere (干预) with that task because we can't understand the extremely complicated relationships among lives that are defined by nature. Usually these relationships are extremely complex. Sometimes, they seem to be so untouchable that they cannot be changed. From my point of view, we have to look at the natural environment around us. We can see that an ecosystem (生态系统) is made up of a lot of different kinds of life, and each life has its own function within the system. If we disturb that, I think it could lead to our extinction (灭绝)．
Even though cloning may have a lot of benefits for humans, I think we should stop cloning because we do not understand it and can't control all of its effects. Maybe in the future, we will be ready to do it, but that time has not yet arrived.
语篇解读：本文主要从三个方面讲述了我们为什么不要克隆。
1．According to the author, we are not ready for cloning because ________.
A．two or more people may have the same appearance
B．scientists are not sure about the personalities of the cloned people
C．people may not function properly if there are more cloned human beings
D．cloning has not been permitted by the government
解析：选B 细节理解题。从第一段“For example, if scientists cloned a man, they might know what he would look like, but they wouldn't know his quality.”可知答案。
2．In the third argument the author fears that we will ________ if we create life at will.
A．change the natural environment around us
B．disturb the ecosystem in nature
C．suffer from overpopulation
D．accelerate the extinction of animals
解析：选B 细节理解题。根据文章倒数第二段“We can see that an ecosystem (生态系统) ...I think it could lead to our extinction (灭绝)．”可知，B项正确。
3．According to the passage, what's the author's attitude towards cloning?
A．Positive. B．Critical.
C．Indifferent. D．Supportive.
解析：选B 推理判断题。根据全文内容可知，作者并不赞成克隆，对此持批评态度。
