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
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单项选择题
According to the passage, static electricity can be caused by ______.
A．using home-made electrical goods
B．wearing clothes made of natural materials
C．walking on artificial floor coverings
D．sorting food in a refrigerator
单项选择题
The author probably would agree with the point of view that ______.
A．students who cheat should be expelled from school
B．parents alone must take responsibility for the rise in student cheating
C．the educational system is sound, and students must follow every rule
D．the educational system in this country would benefit from a thorough evaluation
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