填空题

How does the polygraph work

【参考答案】

It measures people’s blood pressure and pulse rate。
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What is the passage mainly about
单项选择题
A．The shock a business man feel when there is no room for bargaining.B．The shock Peace Corp volunteers suffered from in Borneo.C．The shock a traveler feels in a strange environment.D．The shock Marco Polo felt in Chin
A．The shock a business man feel when there is no room for bargaining.
B．The shock Peace Corp volunteers suffered from in Borneo.
C．The shock a traveler feels in a strange environment.
D．The shock Marco Polo felt in Chin
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