【题目】The other day, my friend John drove his car down the street at ________ I thought was a dangerous speed, ________ surprised everyone in the car.
A. which; that
B. which; what
C. what; which
D. that; which
在线课程【答案】C
【解析】试题分析：考查宾语从句。句意：另一天，我的朋友约翰开车以一个我认为是非常危险的速度，这让车上的人都惊呆了。第一个空what引导一个宾语从句，第二个空是一个非限制性定语从句，所以选C。