After the United States government reported______consumer demands for gasoline, market oil prices closed at $72 a barrel.

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问题 After the United States government reported______consumer demands for gasoline, market oil prices closed at $72 a barrel.

选项 A、weaken
B、weakest
C、weakness
D、weakening

答案D

解析 查看四个选项我们可以看出动词weaken不能修饰名词consumer demand。因为没有定冠词the,所以最高级weakest也不能用。再从上下文的含义来看,横线上应该填入的词的意思是“弱化的,减少的”。所以动词weaken的现在分词weakening是正确答案。
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