2. 职称英语
  3. Greater effort to increase food production must be made if we ______ meet an inc

Greater effort to increase food production must be made if we ______ meet an inc

游客2023-11-13  27
问题 Greater effort to increase food production must be made if we ______ meet an increasing demand by the growing population.
选项 A、can
B、may
C、are to
D、should
答案 C
解析 句子结构题。本题考查情态动词和be to do结构的区别。A  can“能够，可以，许可”；B  may“可能，允许，可以”；C  be to do表示按计划或安排要发生的事或打算做的事，比如：The mayor is to visit our school tomorrow．(市长明天来参观我们学校。)还可以表示强制性，相当于情态动词must，比如：You are to hand in your homework tomorrow．(你明天必须交作业。)D  should“应当，应该”。根据题意，C  为正确答案。
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