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单选题The photoperiodic response of algae actually depends on the duration of darkness, but not on the response of light.A is not on lightB but is not on the lightC and not on lightD the light is not on
题目
单选题
The photoperiodic response of algae actually depends on the duration of darkness, but not on the response of light.
A
is not on light
B
but is not on the light
C
and not on light
D
the light is not on