问题 填空题
2xmy2与-
2
3
x2yn是同类项,则m-n=______.
答案

∵2xmy2与-

2
3
x2yn是同类项,

∴m=2,n=2,

∴m-n=2-2=0,

故答案为:0.

改错题

修改病句。   

1.动物园的爬行馆里展出各种蛇和许多鸟。

                                                                                                                                                          

2.我爱吃苹果、香蕉、黄瓜等水果。   

                                                                                                                                                       

3.农贸市场里有黄瓜、冬瓜、西瓜、南瓜等许多蔬菜。   

                                                                                                                                                       

4.大扫除时,班干部和男同学抢着干重活,让女同学干轻活。  

                                                                                                                                                        

5.《三国演义》是我国的四大名著。   

                                                                                                                                                       

6.我和李明一前一后肩并肩地走进了学校。   

                                                                                                                                                       

7.姐姐光荣地被评为“模范青年”的称号。 

                                                                                                                                                         

8.今天晚上,我一定非要把家庭作业做完。  

                                                                                                                                                      

9.这个学期,我们班参加学雷锋活动的大约有三十多人。 

                                                                                                                                                      

10.我的抽屉里堆满了许多获奖证书。 

                                                                                                                                                      

11.班会上,小明和小伟分别发了言,大家都同意他的说法。 

                                                                                                                                                      

12.瞧,这灯亮些,可以把这个昏沉的小蜡烛熄了。

                                                                                                                                                      

单项选择题 A1型题