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  3. There is too much noise outside. I can not concentrate my attention____________my work.

There is too much noise outside. I can not concentrate my attention____________my work.

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问题 There is too much noise outside. I can not concentrate my attention____________my work.
选项 A、off
B、above
C、about
D、on
答案D
解析 concentrate one’s attention on sth.为固定搭配，意为“集中注意力于”。故选D。
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