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单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．If it’s summer, you need more water.
B．If you’re exercising, you need more water.
C．If you’re a normal person who sits a lot, you need less water.
D．If you’re a normal person who is not sweating, you need more water.
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单项选择题A．He took them to watch a basketball game.B．He trained them to play European football.C．He taught them to play an exciting new game.D．He let them compete in getting bails out of a basket.

A．He took them to watch a basketball game.
B．He trained them to play European football.
C．He taught them to play an exciting new game.
D．He let them compete in getting bails out of a basket.

单项选择题A．They invade the computer and make it a place for manufacturing.B．They infect the hard disc and the whole system.C．They spread throughout the whole system by quickly copying themselves.D．They spread viruses inside the computer system.

A．They invade the computer and make it a place for manufacturing.
B．They infect the hard disc and the whole system.
C．They spread throughout the whole system by quickly copying themselves.
D．They spread viruses inside the computer system.