单项选择题


Questions 11 to 18 are based on the conversation you have just heard.

A．They are having a party.
B．They are playing the piano.
C．Someone else is having a party.
D．Someone else is funny.
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单项选择题
One way for the region to use water efficiently is to ______.
A．develop other enterprises that cost less water
B．draw a plan of irrigation for the various nations
C．import water from water-rich nations
D．stop wars of any sort for good and all
单项选择题
Which of the following best states the main idea of the passage
A．Noise is a major problem; most people recognize its importance.
B．Although noise can be annoying, it is not a major problem.
C．Noise is a major problem and has not yet been recognized as such.
D．Noise is a major problem about which nothing can be done.
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