下列选项中，不属于“三个代表”的表述的是 A．代表先进生产力的发展要求 B．代表中国

短文改错

     Helen is one of my best friend. She taught us              1. __________

English when I attended training class two                       2. __________

years ago. Helen always make good preparation             3. __________

for the lessons, and she tried his best to make                  4. __________

her class lively. I was used to be poor in English              5. __________

especially on written English. Now I am                          6. __________

able write English letters or reports correctly.                  7. __________

I still remember how she helped me my                           8. __________

English patient. Teachers' Day is coming. I am                 9. __________

going to send her a card and give his best wishes.          10. __________

Reading is an experience quitedifferent from watching TV; there are pictures ____ in your mind

instead of before your eyes.   [ ]

A. to form                            

B. form    

C. forming                            

D. having formed

下列建筑材料中，( )可用做屋面保温材料。

A．膨胀珍珠岩

B．膨胀蛭石

C．纸面石膏板

D．中密度纤维板

E．泡沫塑料

下图为“以极点为中心的半球示意图”，图中箭头表示地球自转方向。读图回答。

若箭头还表示洋流流动方向，该处洋流是（）

A.西风漂流

B.日本暖流

C.墨西哥湾暖流

D.北太平洋暖流

新投入的SF6断路器投运（）后应进行全面的检漏一次。

A、3个月；

B、6个月；

C、9个月；

D、12个月