There are a large number of plants existing on earth however very little was made of th

问题补充：

There are a large number of plants existing on earth, however, very little was made of them to feed us.

A. cost

B. value

C. use

D. matter

答案：

A. cost

B. value

(答案→)C. use

D. matter

解析：

试题分析:考查名词辨析。A花费；B价值；C用途；D物质，事情。此处是固定短语make use of “利用”的被动形式，答案选C。句意：地球上有大量的植物，然而它们很少被利用去提供给我们食物。