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問題詳情:

 Changes

 Changes ______to the construction laws in Los Angeles have strengthened the city’s buildings and highways ,_______them more resistant to quakes.

A. making; made                     B. being made; to make

C. made; made                       D. made; making

【回答】

 D

知識點:非謂語動詞

題型:選擇題

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