| 1. 难度：中等 | |
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—Guess what? Tom has failed in the exam ____ second time. —How come? He is ___ second to none in English in our class. A. a; a B. the; a C. a; / D. the; the
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| 2. 难度：中等 | |
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The population of this city ,forty percent of which_____, ______ 15% in the last three years A. are Germans, has risen by B. are Germen, has fallen by C. is Germans, have been increased by D. is Germen, have been reduced by
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| 3. 难度：中等 | |
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I invited him to dinner, but he___ my invitation with thanks. A. approved B. declined C. ignored D. abandoned
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