2. 考研
  3. Greater efforts to increase agricultural production must be made if food shortage______avoided.

Greater efforts to increase agricultural production must be made if food shortage______avoided.

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问题 Greater efforts to increase agricultural production must be made if food shortage______avoided.
选项 A、be
B、will be
C、to be
D、is to be
答案D
解析 if…is／are to do／be可译为“如果要……”。
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考研英语一

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