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
填空题
A few simple facts will help you keep cut flowers ______.
填空题
Respiration plays a key role ______.
填空题
The aging of cut flowers can be slowed down ______.
填空题
Another important way to prolong the life of cut flowers is ______.