单项选择题

In the author's opinion, the idea that geneticists could produce a super-ape is ______.

A．irrational
B．plausible
C．biologically impossible
D．demonstrably true
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单项选择题
The present selection has apparently been preceded by some explanation of ______.
A．some experiments with color pigments
B．the nature of color
C．the color properties of various surfaces
D．the mechanism of the eye's adaptation to color
单项选择题
The type of job an ape could do without supervision would be one which is ______.
A．repetitive
B．mechanized
C．unusual
D．intricate
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