Although biological methods of pest control are now available to committed organic gardeners, there are few of us who never need

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问题 Although biological methods of pest control are now available to committed organic gardeners, there are few of us who never need to______tile use of chemicals.

选项 A、resort to
B、refer to
C、size up
D、pick up

答案A

解析 resort to“依靠,求助于”;refer to“参考,涉及,指的是”;size up“估计”;pick up“拾起,捡起估量”。根据句意,本题答案为A。
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