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【题目】北京时间2016年10月17日7时30分,由我国航天员景海鹏和陈冬驾乘的神州十一号载人飞船成功发射。神舟十一号飞行任务是我国第6次载人飞行任务,也是中国持续时间最长的一次载人飞行任务,总飞行时间将长达33天。2016年10月19日凌晨,神舟十一号飞船与天宫二号自动交会对接成功。据此回答下列问题。

1神舟十一号发射时,我国下列现象可能出现的是( )

A. 长沙市昼长夜短 B. 我国正午太阳高度角都达一年中最小值

C. 三沙市该日太阳从东北方升起 D. 地球公转速度正在加快

2天宫二号与地球组成的天体系统与下列哪一类等级一致( )

A. 总星系 B. 地月系 C. 银河系 D. 太阳系

【答案】

1D

2B

【解析】本题主要考查太阳直射点移动规律,日出日落方向,地球公转的速度。了解天体系统的概念,等级划分,由高到低依次是总星系,银河系(与河外星系并列),太阳系,地月系。

1神州十一号发射时,北京时间是10月17日7时30分,太阳直射点在南半球,长沙市昼短夜长,A错。我国正午太阳高度角较小,但未达到一年中最小值,12月22日前后达最小值,B错。此时是冬半年,日出东南方向,三沙市该日太阳从东南方升起,C错。地球向近日点移动,公转速度正在加快,D对。

2天宫二号与地球组成的天体系统,是绕地球运转的天体系统,与地月系等级一致,B对。总星系、银河系、太阳系等级都高,A、C、D错。

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