单项选择题

An overwhelming richness of vegetation may have caused the level of oxygen, to rise above today’s ______ , with a corresponding depletion of carbon dioxide.

A．concentration
B．saturation
C．satiation
D．plenitude
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He was completely______by her tale of hardship.
A. taken away

B. taken down
C. taken in

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单项选择题
I’ll just______an eye over these figures before you type them.
A. toss

B. cast
C. fling

D. throw
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