单项选择题

Although we have badly fouled our planetary next, ______, it is by no means clear that our profligacy has as yet greatly changed the incidence of cancer.

A．with good will
B．at a rapid pace
C．with woeful consequences
D．at a special period
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单项选择题
That community must now lead extensive reform of the region's universities and scientific institutions, rather than ______ against it.
A．entrench
B．entrench themselves
C．may entrench
D．may entrench themselves
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