单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．Look for the photos of poison ivy in the library.
B．Take a drug that prevents rashes.
C．Avoid certain foods.
D．Stay out of the woods.
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单项选择题
The article was written to explain______.
A．the greenhouse effect
B．the solar effects on the earth
C．the models of solar weather interactions
D．the causes affecting weather
单项选择题
The professor Michael Dertouzos guessed that India could increase GDP by a trillion dollars in the flowing few years by way of ______for Western companies.
A．performing secret white-collar tasks
B．improving management
C．making technological change
D．installing new tools
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