单项选择题

By observing the behavior of animals, scientists may be able to ______.

A．prevent disasters
B．organize groups of people
C．predict earthquakes
D．control areas of California
<上一题 目录 下一题>
热门 试题

单项选择题
According to the passage, static electricity can be caused by ______.
A．washing machines
B．wearing clothes made of natural materials
C．walking on artificial floor coverings
D．listening to the tape recorder
单项选择题
What effect does excessive positive onisation have on some people
A．They think they are mad.
B．They feel very tired.
C．They become violently sick.
D．They are too tired to do anything.
相关试题