单项选择题

A．To show that they have very different behaviors.
B．To show that they send out different messages by their silent language.
C．To show that they have nothing important to do.
D．To show that they are not happier for being kept waiting.
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单项选择题
A．In room 301.B．Next door to room 301.C．On another floor.D．In another building.
A．In room 301.
B．Next door to room 301.
C．On another floor.
D．In another building.
单项选择题
Some students may also worry that handing out free condoms will stimulate more sexual activity.
A．Y
B．N
C．NG
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