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Greater efforts to increase agricultural production must be made if food shortag
Greater efforts to increase agricultural production must be made if food shortag
游客
2025-03-18
1
管理
问题
Greater efforts to increase agricultural production must be made if food shortage______ avoided.
选项
A、is to be
B、can be
C、will be
D、has been
答案
A
解析
本题测试的语言点为be+不定式的用法。be to do sth.(1)表示将来,计划安排要做的事。如:The meeting is to be postponed till next week.(2)表示情态动词的含义。如:The traffic regulations are to be observed.(=must)题句要填充的部分是从句的谓语动词。我们知道,在条件从句中,一般用现在时表示将来,故C可以排除;B用在句中逻辑意义不通;D中用的是完成时态,如果粮食短缺已经避免了,就不必加大努力增加农业生产了,可见D在语义上是不正确的。A是唯一正确的答案。句意为:如果要避免粮食短缺,就必须加大努力增加农业生产。
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