答案 A
4.We can infer from the passage that the writer must be________.
A.a supporter of activities
B.a responsible teacher
C.a top student in class
D.a devoted class leader
解析 推理判断题。结合倒数第二段前半部分中的“...maybe I should say we,as leaders...”以及本段后半部分的内容可推知,作者是一位忠诚的班干部。
答案 D
阅读理解。
Recently there was a major discovery in the scientific research—the mapping of all DNA in a human gene(基因)is complete. Couple of years ago, this seems an impossible task for scientist to accomplish. All this progress in science leads us to believe that the day, when the human being will be cloned, is not far away. Human cloning has always been a topic of argument,in terms of morality or religion.
Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning. If the clone was free of genetic limitations. Then the other clone would be as well. The latter could foe inserted in the woman and allowed to ripen to term. Moreover,cloning would enable women, who can’t get pregnant, to have children of their own.
Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs. This, surely would be greatly beneficial to millions of unfortunate people around the world that are expected to lose their lives due to failure of single(or more) organ(s).It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists.
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