It is an abundance of cheap goods and quick delivery service account for the fact that the number of Internet shopping on this website is four times it was last year.
A. that; that
B. which; what
C. what; that
D. that; what
网友回答
A. that; that
B. which; what
C. what; that
(答案→)D. that; what
解析：考查强调句型和表语从句。第一空that与it is构成强调句型，强调主语an abundance of cheap goods and quick delivery service.第二空是表语从句的引导词，what引导起这个表语从句，并在句中做表语，实际上也是一个倍数表达法。