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() 4. good news!Some scientists have found new ways to treat the disease.
A. What B. What a C. How D. How a
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() 3. He is very his sonhis good result in the exams.
A. proud of;because of B. proud of;because
C. proud as;because of D. proud for;because
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() 2. We should carry on our work after a few days’ break.
A. at B. for C. with D. /
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二、單項(xiàng)選擇。(20分)
() 1. 70% of the Earth covered with water.
A. are B. is C. were D. being
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