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问题 选择题

下列有关物态变化的现象说法正确的是：[ ]

A.霜的形成是凝固

B.冰糕冒“白气”是升华

C. 冬天树上的“雾凇”是凝固

D. 水烧开了冒泡是汽化

答案

答案：D

完形填空
完形填空。
    Two friends   1   a picnic together. Their names are Jim and Tim. Tim is very lazy.   2   the first evening
of their holiday, Jim says to Tim, "Here's some money. Go and buy some meat." 
    "I'm too tired,"    3   Tim, "You go." 
    So Jim goes   4   the meat. 
      5   he comes back. He says to Tim, "Here's the meat now, please cook it."
    But Tim answers, "No, I'm not good at   6  , you do it," So Jim cooks it,   7   he says to Tim, "Go and
   8   some water."
    "No, I don't want to get my clothes dirty," Tim answers. 
       9   Jim says, "The meal is ready, come and eat it."
    "Yes, I'll do that," answers Tim, "I don't like  10  'No' all the time."
( )1. A. have            
( )2. A. In           
( )3. A. answer       
( )4. A. to buy       
( )5. A. Later        
( )6. A. cook         
( )7. A. or           
( )8. A. got          
( )9. A. At last      
( )10. A. telling   		B. has         
B. At          
B. answers     
B. buy         
B. In          
B. cooking      
B. and          
B. to get       
B. At first    
B. saying     		C. had            
C. On             
C. answered       
C. is buying      
C. At first       
C. cooks          
C. then           
C. getting        
C. Just now       
C. talking       		D. are having          
D. Of                       
D. in answering          
D. bought              
D. Before              
D. cooked              
D. but                 
D. get                 
D. At the moment               
D. speaking          
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单项选择题 A1/A2型题

MRI在前列腺增生和前列腺癌的鉴别诊断中具有较高的价值，其诊断前列腺增生主要的依据是下列哪一项（）

A.T1WI前列腺组织为低信号

B.T2WI前列腺增大、周围区受压变薄，信号正常

C.T2WI前列腺增大、周围区内有信号减低影

D.T1WI前列腺组织为高信号

E.T1WI及T2WI前列腺不增大
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