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

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

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问题 A. by keeping its original shape and color
B. in the life of the cut flower
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 本题考查的是对阐述文章的主旨事实与细节的了解。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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