2. 外语
  3. The shortage of energy is getting worse. It ______ an immediate solution.

The shortage of energy is getting worse. It ______ an immediate solution.

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问题 The shortage of energy is getting worse. It ______ an immediate solution.
选项 A、calls off
B、calls up
C、calls for
D、calls at
答案C
解析 本句测试call动词短语的用法。call for要求，需求。如：The present situation calls for rapid action by the government．当前的局势要求政府立即采取措施。因此C最符合题意。本句的意思是：“能源缺乏越来越严重，需要立即解决。”call off取消。如：The football match was called off on account of rain．足球赛因下雨取消。call up打电话。如：I’ll call you up as soon as I get home．我一到家就给你打电话。call at拜访。如：We called at John’s house yesterday．昨天我们到约翰家拜访。
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