搜题请搜索小程序“爱下问搜题”
问题 选择题
下列各组物理量中，全部是矢量的是（　　）

A．位移、时间、速度、加速度

B．质量、路程、速率、时间

C．速度、平均速度、位移、加速度

D．位移、路程、时间、加速度

答案

答案：C

改错题
短文改错。
     以下标有题号的每一行均有一个错误，请找出，并按下列情况改正：
此行多一个词：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。
此行缺一个词：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。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
     Today is Sunday. I′ve  been in Canada for two months.           
This is the first time that I′ve been away my family for such a  
long time. With the help of Katia, a roommate of me, I′ve          
soon got used to live without my parents around. Katia, like        
many other Russian girls, are nice and lively. We became           
friends shortly after we meet each other. Although her English     
is a little hardly to understand, we enjoy chatting  and we         
usually talk a lot about our own family. We're both surprised      
that Chinese culture or Russian culture are so different. Now,      
we are planning a small party for the next Sunday. There, Katia    
will introduce me to some of her friends, one of who has been       
to China several times. I just can't wait.                        		1______
2______
3______
4______
5______
6______                                   
7______
8______
9______
10______
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单项选择题

事业单位工作人员违法违纪行为情节轻微，经过批评教育后改正的，可以（）

A、表扬

B、减轻处分

C、免予处分

D、给予奖励
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