单项选择题

A. It will help detect all kinds of liars.
B. It will most likely prove ineffective.
C. It can help solve complex problems.
D. It is a new weapon against terrorists.

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单项选择题
A. There are too many complaints from net users.B. Hackers’ attack of MySpace cannot be forbidden.C. Parents cannot help checking children’s information.D. It is easy for trouble-makers to do harm to children.
A. There are too many complaints from net users.
B. Hackers’ attack of MySpace cannot be forbidden.
C. Parents cannot help checking children’s information.
D. It is easy for trouble-makers to do harm to children.
单项选择题
A. The building method the builders use to save energy. B. The limit of the flow of air between inside and outside. C. The use of man-made building materials. D. The limit of air-flow and the man-made materials.
A. The building method the builders use to save energy.
B. The limit of the flow of air between inside and outside.
C. The use of man-made building materials.
D. The limit of air-flow and the man-made materials.
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