题目内容

A.Air.B.Medicine.C.Food.D.Water.

Air.
B. Medicine.
C. Food.
D. Water.

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【C1】

A. particular
B. excellent
C. remarkable
D. excessive

【C6】

A. to
B. in
C. up to
D. until

【C8】

A. origin
B. capacity
C. potential
D. source

【C10】

A. outset
B. output
C. outlet
D. outcome

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