试题与答案

混凝土施工包括哪些工序?各工序对混凝土的质量有何影响?

题型:问答题 简答题

题目:

混凝土施工包括哪些工序?各工序对混凝土的质量有何影响?

答案:

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题型:完形填空
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     Traveling is fun because you can see how people in other parts of the world live. One thing travelers
don't often think about before    1    is how other cultures bathe. And bathrooms in many countries may
be    2    from the kind you are used to.
      In the United States, most people take a    3    once a day in the morning. The showerhead is usually
mounted (镶嵌) on the    4    and cannot be moved. The bather slimpy    5    under the water, gets wet,
scrubs (擦洗) with soap and often  wash cloth, and then rinses (冲洗) off. 
        6    often take a bath each night and enjoy playing with small toys such as boats and rubber ducks.
Many adults, especially women, enjoy a soothing (让人宽心的) bath    7    rid of stress at the end of the day. 
        8    is important to remember that when you take a shower or bath in the United States, you should
be careful to keep the water inside the bathtub or shower. Unlike bathrooms in many countries, there is
no drain (排水管) in the floor.    9    water gets on the floor, it cannot go anywhere and must be    10  
 up with a towel or mop (拖把). It can also cause problems for the floor. So be careful.
( )1. A.to travel
( )2. A.different
( )3. A.shower  
( )4. A.floor  
( )5. A.runs   
( )6. A.Adults  
( )7. A.gets    
( )8. A.It    
( )9. A.Since  
( )10. A.cleaned 

B.traveling   
B.same    
B.rest           
B.bath                
B.stands     
B.Old people 
B.to get    
B.This       
B.If      
B.to clean  

C.traveled 
C.similar    
C.sleep           
C.wall        
C.lies        
C.Children   
C.getting     
C.That        
C.While       
C.cleaning 

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题型:单项选择题

Since life began eons ago, thousands of creatures have come and gone. Some, such as the dinosaurs, became extinct due to naturally changing ecologic conditions. More recent threats to life forms are humans and their activities. Man has drained marshes, burned prairies, dammed and diverted rivers. Some of the more recent casualties of man’s expansion have been the dodo, great auk, passenger pigeon, Irish elk, and Steller’s sea cow. Sadly, we can no longer attribute the increasing decline in our wild animals and plant species to "natural" processes. Many species are dying out because of exploitation, habitat alteration or destruction, pollution, or the introduction of new species of plants and animals to an area. As mandated by Congress, protecting endangered species, and restoring them to the point where their existence is no longer jeopardized, is the primary objective of the U.S. Fish and Wilidlife Service’s Endangered Species Program.

Which of the following has become extinct due to man’s destruction

A.African elephant

B.Irish elk

C.Giant panda

D.White Bengal

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