题目内容
How this kind of plant can be ____ in a special way is still unknown to us.
A. kept away B. kept out C. kept alive D. kept off
C
解析:
keep alive意为:使…活着; keep away意为:使…离开; keep out意为:不使入内,防止; keep off意为:不让接近.
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题目内容
How this kind of plant can be ____ in a special way is still unknown to us.
A. kept away B. kept out C. kept alive D. kept off
C
keep alive意为:使…活着; keep away意为:使…离开; keep out意为:不使入内,防止; keep off意为:不让接近.