【題目】We should try our best to make ______ world that is safer, cleaner and healthier than ____ one we are living in now.

A. the; / B. a; / C. the; the D. a ;the

【答案】D

【解析】

試題分析：句意：我們應該努力創(chuàng)造一個比我們現(xiàn)在居住的更安全、干凈、更健康的世界。前句表示“一……”，不定冠詞的用法，填a；后句表示受“we are living in now”修飾而成為特定的一個，用定冠詞the；故選D。

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