We work together to achieve our common purpose: _______ world that is safer, cleaner and healthier than_______ one we are living in.
A.the;/B.a(chǎn); /C.the; theD.a(chǎn); the
D

試題分析:句意:我們一起工作以實現(xiàn)我們共同的目標(biāo):一個比我們現(xiàn)在生活的世界更健康更干凈更安全的世界。不定冠詞a/an表示某一類人或某事物中的任何一個,經(jīng)常用在第一次提到某人或某物時,用不定冠詞起介紹作用,表示一個。a用于輔音音素前an用于元音因素前。定冠詞特指某(些)人或某(些)事物, 以區(qū)別于同類中其他的人或事物。根據(jù)句意,可知第一個世界表示類別,第二個特指,故選D。
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