You can"t appreciate happiness _______ you have known sadness too.   [     ]A. b

You can"t appreciate happiness _______ you have known sadness too.   [     ]A. b

题型:河北省模拟题难度:来源:
You can"t appreciate happiness _______ you have known sadness too.   [     ]
A. because          
B. when          
C. though            
D. unless
答案
D
举一反三
   __  it was hard for children to leave family and friends, many families chose to send their children
to America.    [     ]
A. Because
B. Although    
C. If    
D. As
题型:山东省模拟题难度:| 查看答案
Scientists estimate that plants and animals lived _____ 3.5 billion years ago. [     ]
A. as far as
B. as many as
C. as long as
D. as old as
题型:上海模拟题难度:| 查看答案
Facing a beggar, I may feel this poor person needs help, and the need will not be met _____ I put my
hand in my pocket now.[      ]
A. since
B. in case
C. unless
D. while
题型:上海模拟题难度:| 查看答案
_____ you"ve tried it, you can"t imagine how tasty the fish I cooked is.  [     ]
A. Because      
B. Unless        
C. Although      
D. So long as
题型:上海模拟题难度:| 查看答案
It has come to be realized ______ particular matters in the air expose us to life"s real danger. [     ]
A. what      
B. which      
C. when          
D. that
题型:上海模拟题难度:| 查看答案
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