试题与答案

菊花在秋天里开放,主要是受哪一项非生物因素的影响( ) A.阳光 B.空气 C.

题型:选择题

题目:

菊花在秋天里开放,主要是受哪一项非生物因素的影响(  )

A.阳光

B.空气

C.湿度

D.水

答案:

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