单项选择题


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

A．Go for a swim.
B．Make better use of time.
C．Follow the official procedure.
D．Watch television.
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单项选择题
What’s the result of an accumulation of ice
A．An accumulation of ice would make the global climate system altered.
B．An accumulation of ice would make snow more difficult to melt.
C．An accumulation of ice would increase the amount of moisture in the air.
D．An accumulation of ice would increase the global temperature.
单项选择题
The writer thinks that the growth of specialist periodicals has helped scholars to ______.
A．cut down research costs
B．keep up with current developments
C．spend less time traveling
D．develop their ideas more quickly
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