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外语
The first paragraph mainly tells us______. Air moves under such conditions that______.
The first paragraph mainly tells us______. Air moves under such conditions that______.
admin
2008-12-15
78
问题
The first paragraph mainly tells us______.
Air moves under such conditions that______.
选项
A、there is air pressure
B、the air is heavy
C、air pressure doesn’t remain the same all the time
D、air comes up and down
答案
C
解析
空气的流动在于气压的变化,故选C。
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本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
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公共英语二级笔试
公共英语(PETS)
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