练习册

  • 练习册
  • 试题
    The weather is at the South Pole. 【查看更多】

     

    题目列表(包括答案和解析)

    完形填空。
         Many scientists say that the world is getting hotter and hotter. If they are right, the ice at the North and
    South Pole will melt eventually. If this happens, the sea will  1  and may cover most  2  all of Singapore. This
    will force everybody to move to a  3  country.
         We know that the sun  4  the earth. The heat from the sun hits the  5 , and some of  6   goes back into the
    sky. However, factories and cars  7  a lot of carbon dioxide (二氧化碳). When the gas rises into the sky, the
    heat from the sun can come  8  them but the heat from the ground cannot. It  9   near us in the sky and makes
    the 10   hotter and hotter every year.
         Scientists call this the "greenhouse effect" because a greenhouse is a small glass 11  which is hot inside. It
    is used for 12  plants in cool countries. Many countries are 13  about the greenhouse effect. They are trying
    to stop factories and cars from sending 14  gases into the sky. Scientists are not sure when the world will get
    much hotter. Some people say that the greenhouse effect has 15  already and has begun to affect the world's
    weather.
    (     )1. A. rise　　　　　　
    (     )2. A. and　　　　　　
    (     )3. A. hotter　　　　 
    (     )4. A. shines 　　　　
    (     )5. A. ground         
    (     )6. A. them　　　　　 
    (     )7. A. make           
    (     )8. A. through        
    (     )9. A. hides          
    (     )10. A. cloud         
    (     )11. A. building      
    (     )12. A. putting       
    (     )13. A. excited       
    (     )14. A. dangerous     
    (     )15. A. meant              		B. fall　　　　　
    B. or　　　　　　
    B. larger       
    B. circles      
    B. sky          
    B. it           
    B. spread       
    B. over         
    B. continues    
    B. air                     
    B. flat         
    B. storing      
    B. disappointed 
    B. harmful      
    B. improved          		C. change　　　　 　　 
    C. but 　　　　　　　  
    C. safer               
    C. covers              
    C. mountain            
    C. those               
    C. produce             
    C. into                
    C. follows             
    C. season              
    C. tool                
    C. cutting        
    C. worried             
    C. heavy               
    C. started                  		D. disappear  
    D. till       
    D. farther    
    D. heats      
    D. forest     
    D. such       
    D. form       
    D. toward     
    D. stays      
    D. temperature
    D. machine            
    D. growing                       
    D. pleased    
    D. useful                        
    D. stopped    

    查看答案和解析>>

    阅读理解。
        Our factories and homes burn coal and oil. Every year we have forest fires somewhere. Many scientists
    believe that the weather is changing.
        The earth will perhaps be warmed by about 7℃ at the South Pole (极) and the North Pole. The ice will
    be melt (融化). The sea level (平面) will rise by about 7 meters. As a result, water will cover cities like
    London, Tokyo and New York. Some ports (港口) and towns along the coasts will disappear under water.
        Some other scientists think that the dust, smoke and pollution from coal, wood and oil fires will block
    out (封闭) the ultraviolet rays (紫外线). Then the earth will become colder and great sheets of ice will
    cover Europe and North America. 
        When chemicals in the air mix with rain, we have acid (酸) rain. Acid rain can bring us great harm. It
    destroys (破坏) forests and kills life in lakes and rivers.
        People are beginning to see how serious the problem is. They find it important to work with nature
    instead of against it. They are trying to save the earth in many different ways. But one of the most important
    things to do is to make people understand that saving the earth is saving ourselves.
    1. Some scientists believe that            .
    [     ]
    A. the earth is growing warmer
    B. we need coal in our forests
    C. we can find oil in our forests
    D. we have to burn down the forests every year
    2. Ice at the poles will             if the earth gets warmer.
    [     ]
    A. become thicker by seven meters
    B. cover cities like London and Tokyo
    C. raise the sea level by 7 degrees
    D. become water and make the sea rise
    3. Acid rain can            .
    [     ]
    A. bring great changes in our weather
    B. kill pests (害虫) in lakes and forests
    C. kill the fish in rivers and lakes
    D. cover Europe and North America
    4. What can we learn from the third paragraph?
    [     ]
    A. The dust together with pollution from coal, wood and oil fires will bring us more heat from the sun.
    B. The ultraviolet rays will come more because of the dust and pollution from fires.
    C. According to the scientists, the change in weather hardly has anything to do with the pollution.
    D. As a result of the dust and pollution from coal, wood and oil fires, the earth will become colder.

    查看答案和解析>>

    完形填空。
             Antarctica is the continent which is the most     1     area of land on the
    Earth and is mostly covered     2      ice. This is    3      of the driest and     4  
     in the world. But people from all over the world come to     5    there. Near
    the South Pole, three   6      people live together in a place     7    Amunsen-
    Scott Station.
             The station has libraries, cinemas, shops, sports rooms, canteens and laboratories (实验室). There is
    electricity (电), and they have     8     the system that they use to have a conversation (交谈)    9     someone in
    another place. And they have     10     electronic machines that stores information and uses programs to help the
    m find, organize, or change the information.
             But the people here     11    travel by car, or train, or bus, because there aren't any roads or railways near
    the station. They travel by ship, helicopter, plane, or snow tractor, or    12      dogs.
             There aren't    13      trees or flowers there, but there are hundreds of different birds and other animals.
              Most of the people here are    14      . They study plant and animal life
    and how ice moves. The ice can tell us about changes in climate. Ray Kingman
    is an expert at Amundsen-Scott Station, telling us on the phone, "This is my
    second year here. It's a very interesting and beautiful place, but life is very
    hard     15     . In the summer we can go swimming in hot pools of water.
    We welcome newcomers here for further study of the continent!"
    (     )1. A. southern     
    (     )2. A. for          
    (     )3. A. a            
    (     )4. A. warm areas    
    (     )5. A. travel       
    (     )6. A. thousands    
    (     )7. A. called       
    (     )8. A. telephones   
    (     )9. A. with         
    (     )10. A. computers   
    (     )11. A. don't      
    (     )12. A. with        
    (     )13. A. much        
    (     )14. A. teachers    
    (     )15. A. in the winter    		 B.northern                  
    B. at                         
    B. that                      
    B. coldest places            
    B. go sightseeing           
    B. thousand                 
    B. call                      
    B. radios                   
    B. in                       
    B. printers                  
    B. didn't                  
    B. on                       
    B. any                      
    B. scientists               
    B. during the autumn season    		 C. eastern         
    C. with            
    C. one             
    C. cool areas        
    C. work           
    C. thousands of    
    C. calls           
    C. televisions       
    C. at               
    C. mouse            
    C. weren't        
    C. in front of       
    C. either         
    C. doctors       
    C. in all weather.

    查看答案和解析>>

    Many scientists say that the world is getting hotter and hotter．If they are right , the ice at the North and South Pole will melt eventually．If this happens, the sea will  1  and may cover most  2  all of Singapore．This will force everybody to move to a  3  country．

           We know that the sun  4  the earth．The heat from the sun hits the  5  , and some of 6  goes back into the sky．However, factories and cars  7  a lot of carbon dioxide（二氧化碳）．When the gas rises into the sky, the heat from the sun can come  8  them but the heat from the ground cannot．It  9  near us in the sky and makes the  10  hotter and hotter every year．

    Scientists call this the “greenhouse effect” because a greenhouse is a small glass  11  which is hot inside．It is used for  12  plants in cool countries．Many countries are  13  about the greenhouse effect．They are trying to stop factories and cars from sending  14  gases into the sky．Scientists are not sure when the world will get much hotter．Some people say that the greenhouse effect has  15  already and has begun to affect the world’s weather．

    1．A．rise                          B．fall                         C．change                   D．disappear

    2．A．and                          B．or                           C．but                         D．till

    3．A．better                       B．larger                      C．safer                      D．farther

    4．A．shines                   B．circles                    C．covers                    D．heats

    5．A．ground                     B．sky                         C．mountain                D．forest

    6．A．them                        B．it                            C．those                      D．such

    7．A．make                        B．spread                    C．produce                  D．from

    8．A．through                    B．over                       C．into                        D．toward

    8．A．hides                        B．continues                C．follows                   D．stays

    10．A．cloud                      B．air                          C．season                    D．temperature

    11．A．building                   B．flat                         C．tool                        D．machine

    12．A．putting                    B．storing                    C．cutting                    D．growing

    13．A．excited                   B．disappointed            C．worried                  D．pleased

    14．A．dangerous               B．harmful                   C．heavy                     D．useful

    15．A．meant                     B．improved                C．started                    D．stopped

    查看答案和解析>>


    同步练习册答案