With so much noise of the traffic I couldn’t and do my research work.A. put downB. settl

问题补充：

With so much noise of the traffic, I couldn’t and do my research work.

A. put down

B. settle down

C. break down

D. take down

答案：

A. put down

(答案→)B. settle down

C. break down

D. take down

解析：考查短语辨析，put down 记下，settle down 安定下来，break down 分解，take down 放下，句意：由于交通的噪音如此的多，我不能安定下来进行我的研究工作。所以选B。