单项选择题

第一节 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 How many times has the man seen the movie

A． 3 times.
B． 6 times.
C． 9 times.
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单项选择题
According to the passage, the difference between a gas and a liquid under normal conditions on Earth is that the liquid ______.
A．is affected by changes in pressure
B．has a permanent structure
C．forms a free surface
D．is considerably more common
单项选择题
Which of the following would be the most appropriate title for the passage
A．The Properities of Gases and Liquids.
B．What Fluids and Gases Are Made of.
C．New Uses for the Gas and the Liquid.
D．New Theories about Fluids and Gases.
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