According to the passage bats and adult owls cannot see colours A.because they hunt at ni
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According to the passage, bats and adult owls cannot see colours,
A.because they hunt at night
B.because they cannot see light
C.because they have no cones and rods
D.because they have no cones
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正确答案:D
解析:这道题可从第三段第一二句中找到,这两句话告诉我们在夜晚捕食的鸟和动物的眼睛几乎没有或根本没有锥状细胞(cone),所以不能区别颜色。而蝙蝠或猫头鹰就属于这样的动物。故D正确。
