哺乳动物运动系统的组成是 A．由关节组成 　 B．由骨骼和骨骼肌组成 C．由全身

阅读理解。

       Peter has five dollars and he wants to buy a birthday present (礼物) for his sister, Mary. Mary will

be six years old next Saturday. Peter is in a toy shop now.    

       He looks at books, paints  and  soccers. However, he  doesn't think they are right presents for his

sister. He is ready to leave when a tall shop assistant stops him.

       "Can I help you?"the shop assistant asks.    

       "I'm looking for a present for my sister,"  Peter answers. "but I can't find anything nice. "    

       "There are some kites in the boxes, " the shop assistant says and points to some boxes in the

corner. "They are popular this season. Would you like to have a look at them?"    

       The kites are really great, and they cost only $ 41. 30. Peter thinks he finds the best present. He

buys a green kite with a fish on it. He knows it will make Mary happy.

1.Where does this story happen?    

A. In a school.  

B. In a kitchen.  

C. In a playground. 

D. In a shop.

2. How does Peter find the kite?    

A. It is in the window.              

B. A boy is flying one.     

C. A shop assistant shows it to him. 

D. He sees it near the balls.

3. What is on the green kite?

A. A dog.     

B. A fish.     

C. A soccer.  

D. A plane.

4. How much does Peter still have after he buys the kite?   

A. $4.30.    

B. $0.70.    

C. $5.00.    

D. $9.30.

5. Which is the best title for this story?    

A. Mary's birthday    

B. A toy shop    

C. A present          

D. A shop assistant

干俄罗斯最大的军火出口对象是印度，其次才是中国。

有耐青霉素酶作用（）

A.氨苄西林

B.苯唑两林

C.两者均有

D.两者均无

企业系统的生产力要素是什么？

某大型飞机的下滑接收天线至着陆主轮的垂直距离为6m，在ILS基准高为14m的跑道作进近时，有增加场外接地的危险，因此将该项类飞机的决断高提高为（）.

A.75m

B.90m

C.120m