2. 外语
  3. A.by keeping its original shape and color B.in the life of cut flowers C.to produce carbon dioxide D.for as long as possible E.b

A.by keeping its original shape and color B.in the life of cut flowers C.to produce carbon dioxide D.for as long as possible E.b

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问题 A.by keeping its original shape and color
B.in the life of cut flowers
C.to produce carbon dioxide
D.for as long as possible
E.by controlling temperature
F.to replace the water and solution every day
Another important way to prolong the life of cut flowers is______.
选项
答案F
解析 本题较简单,只要找到全文的最后一句就能正确回答该题,选项F符合题意,故选F。
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