单项选择题

Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are ______ off.

A．avoided
B．excluded
C．screened
D．separated
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单项选择题
I am sure I can ______ him into letting us stay in the hotel for the night.
A．speak
B．say
C．talk
D．tell
单项选择题
People throughout the world are eating ______ meat per person as they did in 1950.
A．more than twice
B．twice much as
C．twice as much
D．twice more
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