问题 单项选择题 案例分析题

2007年10月24日18时05分,中国第一颗绕月探测卫星“嫦娥一号”在西昌卫星发射中心成功发射升空,预定于10月31日变轨奔向月球。“嫦娥一号”的成功发射标志着中国航天技术从低空探测迈向深空探测新阶段。回答下列小题。

“嫦娥一号”在升空过程中()

A.所穿越大气温度变化过程是:降-升-降

B.所穿越大气温度越来越低

C.在平流层穿越电离层

D.与空气的摩擦力越来越小

答案

参考答案:D

解析:

嫦娥一号升空过程中,先穿越对流层,之后是平流层,最后是高层大气。在平流层气温随高度增加而递减,平流层随高度增加气温升高后降低。高层大气中有电离层。随高度升高,摩擦力越来越小。

选择题
改错题
短文改错。
       对标有题号的每一行做出判断:如无错误,在该行右边横线上划一个勾(√),如果有错误
(每行只有一个错误),则按下列情况改正:
该行多一个词:把多余的词用斜线()划掉,在该行右边横线上写出该词,并也用斜线划掉。
该行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
该行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。
 Dear Amy,                                                    
        I have a problem and I'm writing ask you                      
for an advice. This is a secret, so don't tell anybody else.  
My cousin and I used to getting along very well and          
we were good friend. We were planning to spend                
part of the winter holiday together, so now                
I don't think I want to invite her home.                      
Recently I has discovered that he's started to tell        
lies. When I told him this was wrong to tell lies,            
but he just laughed at me. The problem is, "Should I        
tell his parents or his teacher, or should I keep quietly?"  

1. _________           
2. _________        
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10. _________