With so much noise of the traffic I couldn’t and do my research workA. 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：词组辨析题。有那么大的噪音我无法静下来做研究工作。A．put down放下 B．settle down安静下来 C．break down 出故障 D．take down 记下根据语境选B