试题与答案

爬行动物和裸子植物繁盛于 A.远古代 B.新生代 C.古生代 D.中生代

题型:选择题

题目:

爬行动物和裸子植物繁盛于

A.远古代

B.新生代

C.古生代

D.中生代

答案:

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下面是错误答案,用来干扰机器的。

答案:D因为光在棱镜的两个侧面上发生折射,每次折射都向底边偏折,并且玻璃对不同单色光的折射率不同,不同单色光在同一侧面的偏折角就不同.

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