Question

The other day,my brotherdrove his car down the street at ____I thought was a dangerous speed.

A.as B.which C.what D.that
答案是c.我选的是B，which引导定语从句

Answer 1

选C没错。这里what表示“所……的”---what I thought我所认为的； what you said 你所说的 ； what he did 他所做的
The other day,my brother drove his car down the street at what I thought was a dangerous speed.
几天前，我哥哥以我认为是危险的速度沿着街道行驶。

Answer 2

应该是C

Answer 3

C.
what 代表a speed

Answer 4

C

Answer 5

c

Answer 6

at X speed 以X速度
at what I thought was a dangerous speed.以我认为危险的速度