Question

【题目】

As you know, the output of cars in 2010 is five times _______ it was in 2000 in the factories across our country.

A. which

B. that

C. how

D. what

Answer 1

【答案】D

【解析】考查表示倍数的句型。由于be动词的后面是表语从句，从句缺少表语，因此只能用连接代词what引导表语从句，D项正确。