单项选择题

The discoveries of science often are a mixed blessing. On the one hand they give us valuable pesticides that enable the farmer to grow more abundant crops and on the other hand they the benefits by destroying the balance of nature.

A．compromise
B．misplace
C．damage
D．counterract
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单项选择题
Her lecture gave us a sense of how empty the universe is, in spite of ______ number of stars within it.
A．varying
B．enormous
C．unusual
D．limited
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