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            • 1．
              ______ birds use their feathers for flight，some of their feathers are for other purposes．（　　）
              A．Once
              B．If
              C．Although
              D．Because
              难度：易
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            • 2．

              The most pleasant thing of the rainy season is _____ one can be entirely free from dust．（　　）

              A．what
              B．that  
              C．whether   
              D．why
              难度：易
              解析 收藏 试题篮
            • 3．

              I love the weekend，because I_____ get up early on Saturdays and Sundays．（　　）

              A．needn’t    
              B．mustn’t    
              C．wouldn’t  
              D．shouldn’t
              难度：易
              解析 收藏 试题篮
            • 4．

              I really enjoy listening to music ___ it helps me relax and takes my mind away from other cares of the day．（　　）

              A．because   
              B．before      
              C．unless      
              D．until
              难度：易
              解析 收藏 试题篮
            • 5．

              I am not afraid of tomorrow，______ I have seen yesterday and I love today．（　　）

              A．so    
              B．and   
              C．for   
              D．but
              难度：易
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            • 6．
              A sudden stop can be a very  frightening experience，______ if you are travelling at high speed．（　　）
              A．eventually
              B．strangely
              C．merely
              D．especially
              难度：易
              解析 收藏 试题篮
            • 7．
              Many businesses started up by college students have ________thanks to the comfortable climate for business creation．（　　）
              A．fallen off  
              B．taken off  
              C．turned off
              D．left off
              难度：易
              解析 收藏 试题篮
            • 8．
              The cooling wind swept through out bedroom windows，____ air conditioning unnecessary．（　　）
              A．making
              B．to make
              C．made
              D．being made
              难度：易
              解析 收藏 试题篮
            • 9．

              难度：易
              解析 收藏 试题篮
            • 10．

              Low-carbon lifestyle is of great benefit to the world environment. However, ________ can be enjoyed from it until you have a deep understanding of it.

              A. something            B. nothing          C. few              D. much

               

              难度：易
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