单项选择题

If I didn't （） them （）I should probably forget all about them.

A. wrote; down
B. write; down
C. write; for
D. written; about

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The （） problem of bringing a space-ship back from the moon has been solved.

A.technique 
B. technology  
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单项选择题
Tom's brother speaks French very well （）Tom can speak little French.

A. or      
B. unless     
C. in spite of    
D. while
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