The word “rejuvenated” ( Para. 5) most probably means __________ 。

A．modified

B．re-collected

C．classified

D．reactivated

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参考答案

此词出处在第五段，“rejuvenated”和前一句的“reactivating”构成一种近义的重复。故应选D。

1 The research at the University of Wisconsin is mentioned to show __________ 。

A．the isolation of stem cells

B．the effects of gene therapies

C．the advantages of human cloning

D．the limitations of tissue replacements

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2 Which of the following is true according to the text?

A．The principle of gene therapy is applicable to that of clonin

B．The isolation of stem cells is too difficult to be feasibl

C．It is reasonable for all body instructions to be activate

D．Cloned animals will eventually take control of the worl

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3 Towards the genetic research, the author's attitude can best be said to be that of__________ 。

A．frustration

B．indifference

C．amazement

D．opposition

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