单项选择题

The sun heats the earth, （） is very important to the living things.

A．which
B．that
C．as
D．what

<上一题目录下一题>

热门试题

填空题

My friend and co-worker John (play)（）basketball in his spare time.

单项选择题

What does the writer think about machines with human-like ability（）

A．He believes they will be useful to human beings.
B．He believes that they will control us in the future.
C．He is not quite sure in what way they may influence us.
D．He doesn’t consider the construction of such machines possible.