根据材料请回答下列各 Directions: There are 20 blanks in the following passage. For each bl

ank there are four choices marked A．, B．,C), and D．on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre. The sensational news a couple of years agothat scientists had cloned a sheep sent academicsand the public into a panic at the prospect thathumans might be next. That is a ______ 62 ______reaction.Cloning is a ______ 63 ______ challenge to the most fundamentallaws of biology, ______ 64 ______it is not unreasonable tobe______65______ that it might threaten human society anddignity. Yet much of the ethical opposition seems also to grow out of an unthinking disgust-a sort of"yuck (令人厌恶的事物． factor. "And that makes it hard for even ____ 66 ____scientists and ethicists to ____67 ____the matter clearly. While human cloning might not offer great benefits tohumanity, no one has yet made a persuasive ____ 68 ____ thatit would do any real harm, ____ 69____. Theologians (神学专家)____ 70 ____ that to clone ahuman would ____ 71 ____ human dignity. That would surelybe true if a cloned individual were treated as a ____72____ being, with fewer rights or lower____ 73 ____ . But whysuppose that cloned persons wouldn't share the samerights and dignity as the rest of us？ A leading ethicist hassuggested that cloning would violate the "right to geneticidentity."____ 74 ____ did he come up with such a right？ Itmakes perfect____ 75____to say that adult persons have aright not to be cloned without their voluntary, informedconsent. But if such consent is given, whose "fight" togenetic identity would be violated？ Many of the science fiction scenarios(剧情的． ____ 76____by the prospect of human cloning turn out,____ 77____reflection, to be absurdly improbable. There is the fear, for instance, that parents might clone a child to have"spare parts"____78 ____the original child needs anorgan ____79 ____. But parents of____80____twins don't viewone child ____81 ____an organ farm for the other. Whyshould cloned children's parents be any different？ 请回答62___________

A. quick

B. reasonable

C. thoughtful

D. prompt