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
The aging of cut flowers can be slowed down______.