搜题
王老师:19139051760(拨打)
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第1题

产生视差的原因是( )。
·观测时眼睛位置不正确
·目镜调焦不正确
·前后视距不相等
·物像与十字丝分划板平面不重合
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第2题

He wouldn’t have beesaved eveif he ____ to hospital at once.
·has beesent
·was sent
·had beesent
·was being
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第3题

______, parents must set a good example for their children.
·Generally
·Obviously
·Fortunately
·Unnecessaril
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第4题

We wish that people everywhere ____ more concerfor the environment around them.
·show
·showed
·shall show
·s
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