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(1.00分)The technology has been   (简化) so that anyone can use it.

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states the popularity of the term  indicates a clever new technology  undermines an existing technology  corrects a misconception  
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In 1940.  Last year.  After the unification.  In 1949.  
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had broken into; had been broken    had been broken into; stolen    has been broken into; stolen    has been broken into ; has bee broken  
teeth; feet    tooth; foot    tooth; feet    teeth; foot  
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is not known    are not known    has not known    have not bee  

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