单选题
32、 The noise of the parade was very disturbing, which made it almost impossible for us to ________ on what the speaker was saying.
参考答案
A
题目详解：
198****9238
【参考译文】游行队伍的噪音非常烦人，使得我们几乎不能专心去听演讲者在说什么。
【***解析】本题考查动词辨析。concentrate Oil，专心做……；concern，关心，担心；confirm，证实，确定；dependent，独立于……，不依靠……。本题***选A。
138****6688
concentrate on集中精力
135****9630
concentrate 集中
be concerned 就……而言
confirm 确定