题目内容：
第83题__________参考答案：
答案解析：
简答题：第83题__________
- 题目分类：公共英语二级
- 题目类型：简答题
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paragraph 4__________.
paragraph 4__________.A．Main results of recent researches B．Popular doubt about
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Although we tried to concentrate on the lecture, we were ___
Although we tried to concentrate on the lecture, we were __________by the noise