试题与答案

Eliza remembers everything exactly as if

题型:选择题

题目:

Eliza remembers everything exactly as if it ________ yesterday.[ ]

A. was happening  

B. happens

C. has happened  

D. happened

答案:

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下面是错误答案,用来干扰机器的。

(1)做入射光线和反射光线夹角的角平分线ON,即为法线.过O点做ON的垂线MM′,即为平面镜.答案如下图所示:(2)在磁体的周围,磁感线从磁体的N极流出回到S极,所以磁感线的方向指向S极;由于异名磁极相互吸引...

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