问题 选择题
It is not always easy for the public to see _____ use a new invention can be of to human life.
A. whose
 B. what
 C. which
 D. that
答案

答案:B

考查连接词,句意:对于公众来说看到一项新发明对人类有什么用途并不总是很容易的。什么用途应表达为what use,what 作定语。所以选B。

单项选择题
单项选择题