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3. We've worked out a method by which our production can be raised                   .

(scale)

我们巳研制出了一个能大规模提高生产的方法。

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(   ) 2. A. to   B. in   C. to   D. for

(   ) 3. A. it   B. this   C. that   D. which

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(   ) 7. A. released   B. fell   C. dropped   D. slipped

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(   ) 9. A. position   B. floor   C. table   D. scene

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