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20.   all kinds of difficulties,the workers have made rapid progress in the construction of the World Expo 2010 Shanghai.

    A.With          B.For           C.Under          D.Beyond

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19._______of the household rubbish     recycled or reused since the new technology was applied.

    A.Three-fourth; has                  B.Three-fourth; have been

    C.Three-fourths; has been            D.Three-fourths; have

试题详情


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