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提问:57810820
级别:七年级
来自:安徽省滁州市定远县

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回答数:1
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已解决的问题 The group of students went to the suburb, did some
The group of students went to the suburb, did some research work, and ________ the water in the river to see if it had been polluted.
A. proved B. boiled C. tested D. exchanged
 提问时间:2009-12-13 19:39:37    评论1举报
最佳答案此答案已被选择为最佳答案,但并不代表问吧支持或赞同其观点
回答:麦子
级别:学士

2009-12-14 13:14:01
来自:上海市
完全考察的是词汇啦
A证明 B煮沸 C测验 D交换

根据句意容易选出C
后半句句意是:测验湖里的水,来判断是否被污染了
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哦哦!O(∩_∩)O谢谢!
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