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
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单项选择题
According to the passage, which of the following statement is true
A．A change in the educational system will eliminate the need to cheat.
B．The problem of student cheating has its roofs in deeper problems.
C．Students do not cheat on essay tests.
D．Punishment is an effective method of stopping cheating.
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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