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 A few simple facts will help you keep cut flowers______.
A.
【参考答案】
D D 解析：本题考查的是对阐述文章的主旨事实与细节的了解。本题的在第一段，该段的最后一句话中的第一个词this......