单项选择题

Science and society are（）collaborators: In the best of worlds we may achieve a very fine and finely negotiated partnership, and in the worst of worlds,（）one by the other.

A．symbiotic … destruction of
B．antagonistic … amelioration of
C．trustworthy … exploitation of
D．uneasy … annihilation of
E．parasitic … indifference to

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单项选择题

In view of the fact that his enemies knew him as cheerful, his allies exhorted him, as a matter of self-preservation, to（）himself as taciturn.

A．disguise
B．transform
C．admit
D．consider
E．recognize

单项选择题

Liberation from（）community bonds is a （） and honored theme in our culture, exemplified by the Pilgrims' storied escape from religious convention.

A．vilified… monotonous
B．sanctified … repetitious
C．ossified … recurrent
D．consumptive… truthful
E． lax … brilliant