单项选择题

By "stupid endeavor" ( Line 2, Para.1 ), Westhusin means to say that______.

A．human cloning is a foolish undertaking
B．animal cloning is absolutely impractical
C．human cloning should be done selectively
D．animal cloning is not worth the effort at all
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单项选择题
It can be seen that present cloning techniques______.
A．provide insight into the question of nature vs. nurture
B．have been widely used in saving endangered species
C．have proved quite adequate for the cloning of humans
D．still have a long way to go before reaching maturity
单项选择题
It seems that the controversy over the value of MBA degrees has been fueled mainly by______.
A．the complaints from various employers
B．the success of many non-MBAs
C．the criticism from the scientists of purer disciplines
D．the poor performance of MBAs at work
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