单项选择题

A．Water can only be used once.
B．Used water can be recycled.
C．Recycled water is unfit for drinking.
D．Only rain-water is drinkable.
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单项选择题
A．He wanted to grab the girl.B．He wanted to frighten the girl.C．He wanted to prove it dangerous to do so.D．He was ordered to do so.
A．He wanted to grab the girl.
B．He wanted to frighten the girl.
C．He wanted to prove it dangerous to do so.
D．He was ordered to do so.
单项选择题
A．To limit the time on the Internet.B．To supply more activities and games.C．To encourage people to do more healthy exercises.D．To consider social factors about the design for technology.
A．To limit the time on the Internet.
B．To supply more activities and games.
C．To encourage people to do more healthy exercises.
D．To consider social factors about the design for technology.
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