单项选择题

Albert Einstein, the greatest scientist in the 20th century, once______an offer of $1,000 a minute to speak on the radio.

A．turned down
B．turned up
C．turned out
D．turned in
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单项选择题
Which of the following methods can make rain
A．Killing pigs and sheep.
B．Blowing a stream of water into the air from a kind of pipe.
C．Shooting guns or causing explosions.
D．None of the above is right.
单项选择题
Which of the following functions of the computer is NOT mentioned in the passage
A．Offering entertainment.
B．Making phone calls.
C．Doing office and business work.
D．Sending information.
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