单项选择题

(Low-level) cumulus clouds, mid-level altostratus clouds, and high-altitude cirrus clouds all (conveys) (information about) (their) atmospheric realms.（）

A.Low-level
B.conveys
C.information about
D.their

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单项选择题
Only a decade ago it had no modern industry worth speaking of.（）

A．1 year
B．5 years
C．10 years
D．20 years
单项选择题
Do you have any concept of what the room will look like with those colors.（）

A．intention
B．suggestion
C．plan
D．idea
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