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            • 1． At minus 130℃，a living cell can be ________ for one thousand years．（　　）
              A．preserved
              B．protected
              C．spread
              D．developed
              难度：中等
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            • 2． All of these letters and telegrams，almost without exception，urge that the cause we have been fighting for_______．（　　）
              A．be carried on
              B．being carried on
              C．carrying on
              D．to carry on
              难度：中等
              解析 收藏 试题篮
            • 3． Nobody but the workers here and those who are invited ______into the studio．（　　）
              A．are admitted
              B．are admitting
              C．is admitted
              D．is admitting
              难度：中等
              解析 收藏 试题篮
            • 4．
              Children won't put on weight easily if they _____ to eat fruit and vegetables.

              A. persuade
              B. were persuaded
              C. will be persuaded
              D. are persuaded
              难度：较易
              解析 收藏 试题篮
            • 5．
              The number of children who have lost parents to AIDS _____ to rise to over 26 million in 2011.

              A. are expected
              B. is expecting
              C. are expecting
              D. is expected
              难度：中等
              解析 收藏 试题篮
            • 6．
              Travelers _____ that they should bring their ID cards with them.

              A. have reminded
              B. are reminded
              C. were reminding
              D. had been reminded
              难度：较易
              解析 收藏 试题篮
            • 7．
              All communication has to be open, honest, and patient if a happy and healthy relationship _____.

              A. will maintain
              B. is maintaining
              C. are maintained
              D. is to be maintained
              难度：中等
              解析 收藏 试题篮
            • 8．
              It is reported that the drivers won't go back to work until their demand for better pay ____.

              A. is to satisfy
              B. is satisfied
              C. will be satisfied
              D. has satisfied
              难度：中等
              解析 收藏 试题篮
            • 9．
              We must apply what we have learned to our work because in no case _____ from practice.

              A. should theory separate
              B. theory should be separated
              C. theory should separate
              D. should theory be separated
              难度：中等
              解析 收藏 试题篮
            • 10．
              Many students believe the choice of their courses and universities should ____ their own interest.

              A. be based on
              B. base on
              C. be basing on
              D. base at
              难度：较易
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