在陈设鲜花时应远离水果，因为水果自身会产生和排放（），会影响鲜花的寿命。

A.多元酚

B.乙烯

C.酶

D.淀粉

In the airport. I could hear nothing except the roar of aircraft engines which ______ all other sounds.

A. dwarfed
B. diminished
C. drowned

D. devastated