方程3x-y=4中,有一组解x与y互为相反数,则3x+y=( )。

题型:填空题

问题:

方程3x-y=4中,有一组解x与y互为相反数,则3x+y=(     )。

考点:二元一次方程组的解法
题型:填空题
完形填空。
     Why    1    children go to school? Do you know? You may    2    that they go to school to learn Chinese,
English, and    3    subjects. This answer is    4    But do you know    5    they learn all these things? And are
these things all that they can learn    6    school?
     The answer is "No". Children must learn how to learn at school. No one can learn     7    from school.
When they    8    school they must continue (继续) to learn. So a good teacher at school    9    his students
to learn something and teaches them how to learn something and the ways to learn something. Then children
can continue to learn   10   after they leave school.
( )1.A.can       
( )2.A.say       
( )3.A.the others
( )4.A.right     
( )5.A.which     
( )6.A.at       
( )7.A.something          
( )8.A.leave     
( )9.A.teach     
( )10.A.well     

B.do        
B.speak  
B.other      
B.easy      
B.what      
B.to        
B.anything            
B.over      
B.teaches   
B.nice    

C.are             
C.tell         
C.another        
C.hard           
C.why            
C.for            
C.everything    
C.go to                                         
C.teaching      
C.good         
题型:填空题

确诊犬猫慢性肾衰的重要检查方法是()

A.血液常规检查

B.血液生化检查

C.X线检查

D.超声波诊断

E.肾脏造影检查

题型:填空题

2009年9月8日,上海白领张军(化名)因好心帮载自称胃痛要去医院的路人,结果却被城市交通执法大队认定为载客黑车,遭扣车与罚款l万元。原来那名路人是执法大队的“钩子”,专门诱人入瓮的。人们将这类事件称为“钓鱼事件”。图5漫画说明 (   )

A.要加强政治职能,打击违法犯罪B.市场调节具有自发性
C.政府依法执政,关系到政府的形象和人民利益
D.政府能否依法行政,对社会道德状况产生重要的影响

题型:填空题

户外运动中产生的垃圾如何处理?

题型:填空题

在两网格线相交处的点,称为什么()

A.网格点

B.锚点

C.网格面片

D.网格线

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