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问题 选择题

如图所示的观察装置类似于光学中学过的

[ ]

A.凸透镜　　

B.凹透镜　　

C.潜望镜　　

D.放大镜

答案

答案：C

完形填空
完形填空。
     In some parts of the world there are large deserts. There are    l     trees and no water there.Travelers     must take food and    2     with them. The only animal who can walk    3    the desert is the camel. It can  
go without food and water    4    a long time, and it can carry heavy loads (担子). People call the    5   
"the ship of the desert".
     The camel is very big. It had one or two humps (驼峰) on its back, short ears and a long    6   . The
camel's humps hold fat, and its stomach hold water in twelve deep pockets. Each pocket    7   a closed 
mouth and the food does not move with the water. When the camel    8   some water. it can get it out of 
the     9    . The camel's food is    l0   .
( )1. A. no  
( )2. A. grass  
( )3. A. out of  
( )4. A. at   
( )5. A. horse  
( )6. A. nose
( )7. A. has  
( )8. A. is wanting
( )9. A. hands  
( )10. A. meat  		B. any
B. water
B. into
B. until
B. elephant
B. leg
B. had
B. wanted
B. pockets
B. bread		C. and
C. meat
C. in
C. for
C. cow
C. neck
C. have
C. was wanting
C. mouth
C. cakes		D. some                    
D. drink                    
D. through                  
D. by                      
D. camel                    
D. mouth                    
D. having                  
D. wants                    
D. nose                    
D. grass and leaves of trees
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单项选择题

下列避孕方法中哪项最不可靠（）

A.宫内节育器

B.避孕套

C.安全期避孕

D. * * 隔膜

E.短效避孕药
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