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问题 单项选择题

商品的二因素，从表面上看是使用价值和交换价值，在本质上是使用价值和价值。这是因为

A．价值是交换价值的基础和内容，交换价值是价值的表现形式

B．交换价值是价值的基础和内容，价值是交换价值的表现形式

C．价值是商品的社会属性

D．使用价值是商品的自然属性

答案

参考答案：A

完形填空
完形填空。
Mary: Hello, this is Mary speaking. 
Nancy: Hi, Mary. Speaking.
Mary:   1    your pictures. Australia is very beautiful. _2   is the weather in Australia?
Nancy: It's   3  .
Mary: That's great. It's snowy in Beijing.
Nancy: It's summer in Australia but winter in Beijing. That's   4   .
Mary: Yes, I like winter. Some boys and girls    5   snow.
Nancy: Great! I like snow. In Australia it    6   snow.
Mary: That sounds bad. Now Beijing    7   very cold. I am   8   the scarf and gloves (手套).
          Autumn (秋季) is the best season in Beijing. The weather is not too 9  or too cold.
Nancy: Autumn here is nice, too. Goodbye!
Mary:    10   .
( )1. A. Thanks          
( )2. A. How            
( )3. A. sun            
( )4. A. interest        
( )5. A. are playing with
( )6. A. do              
( )7. A. am              
( )8. A. having on      
( )9. A. hot            
( )10. A. Thank you      		B. Thanks for  
B. What        
B. suns        
B. interesting
B. are playing   
B. doesn't    
B. is          
B. putting    
B. cool        
B. Sorry       		C. Thanks of      
C. Where          
C. sunny          
C. interested    
C. is playing with 
C. is            
C. are            
C. wearing        
C. warm          
C. Excuse me      		D. Thank you             
D. Which    
D. cold      
D. interests
D. is playing
D. isn't    
D. was      
D. wear      
D. cold      
D. Bye      
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单项选择题

心性肺源性心脏病最常见病因是（）

A.ARDS

B.肺间质纤维化

C.肺动脉栓塞

D.重症肺炎

E.COPD
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