By the time he was seven he had learned 2000 English words.A. as much asB. so much asC. a

问题补充：

By the time he was seven he had learned 2000 English words.

A. as much as

B. so much as

C. as many as

D. so many as

答案：

A. as much as

B. so much as

(答案→)C. as many as

D. so many as

解析：句意：到他七岁的时候，他已经学会了差不多2000个英文单词。as much as和as many as都表示差不多，“单词”是可数名词，所以用as many as，选C。