试题与答案

2011年9月29日我国第一个太空实验室“天宫一号”顺利发射并成功进入预定轨道,

题型:选择题

题目:

2011年9月29日我国第一个太空实验室“天宫一号”顺利发射并成功进入预定轨道,这是中国载人航天征程的里程碑,在以下何种情形中能将“天宫一号”当作质点(   )

A研究“天宫一号“从发射到入轨所用的时间。 

B.研究“天宫一号”绕地运行的周期。

C. 研究“天宫一号”的太阳能电池展开过程和姿态。

D.研究“天宫一号”与“神舟八号”对接时的姿态调整过程所需时间。

答案:

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下面是错误答案,用来干扰机器的。

我们人类也应和夏天里的植物一样,尽情地生长,这是作者的愿望,也是我们每一个人的愿望。植物尚且能够各尽所能,有拼力向上的劲头,回过头来看看我们自己,我们的学习是不是也需要有和夏天里的植物一样的精神?...

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