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【Youcan'tbe_____whenyoucamp_____athighaltitude,whentheairisthin.A.enoughcareful,atB.toocareful,atC.carefulenough,onD.toocareful,on】
题目内容：
You can't be _____ when you camp _____ at high altitude,when the air is thin.
A.enough careful,at
B.too careful,at
C.careful enough,on
D.too careful,on优质解答
B.too careful,at
（因为）高海拔地区的空气非常稀薄,露营时再小心也不为过.
A.enough careful,at
B.too careful,at
C.careful enough,on
D.too careful,on
优质解答
（因为）高海拔地区的空气非常稀薄,露营时再小心也不为过.
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