题干
I'm very busy. I have mountains of work to do.
A：a large number of
B：a small amount of
C：a large amount of
答案(点此获取答案解析）
C
I'm very busy. I have mountains of work to do.
A：a large number of
B：a small amount of
C：a large amount of
则下图中阴影部分表示的集合为 （ ）