单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．They can accelerate the speed of the wind.
B．They make the continent a pleasant place for humans.
C．They cool the wind and thus slow down melting.
D．They cool the weather and freeze all the water.
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单项选择题
A．Repeat it aloud.B．Write it down.C．Make a mental picture of it.D．Practice recalling it.
A．Repeat it aloud.
B．Write it down.
C．Make a mental picture of it.
D．Practice recalling it.
单项选择题
A．Whether the program is good for the children.B．Whether the show is interesting.C．Whether the show is related to parenting.D．Whether the children like this channel.
A．Whether the program is good for the children.
B．Whether the show is interesting.
C．Whether the show is related to parenting.
D．Whether the children like this channel.
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