阅读理解。

     The  children  often  play  football  in the  garden  and  sometimes  break Mrs Smith's windows. One

afternoon Mrs Smith is at home and reads a book. In a minute she closes her eyes and goes to sleep. At

that time a little boy knocks (敲) at the door. Mrs Smith opens the door and asks, "Do you break my

window again?"

     "Oh, no," says the boy, "your window is open this time and my football is in your room. Can I get it

back, please?"

1. The children often go to the garden _____.

A. to play    

B. to fly kites    

C. to play football    

D. to play basketball

2. The children playing football often break Mrs Smith's_____.

A. doors    

B. windows    

C. books      

D. gardens

3. One afternoon Mrs Smith _____ at home.

A. is writing something

B. is cleaning windows

C. is watching TV

D. is reading

4. A little boy _____ Mrs Smith's door.

A. opens    

B. closes    

C. knocks at    

D. breaks

5. The children's football is _____.

A. in Mrs Smith's room  

B. in the garden

C. on the window          

D. Mrs Smith's

铝及其铝合金主要采用的焊接方法是（）。

A.手工电弧焊

B.气焊

C.氩弧焊

D.埋弧自动焊