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1 1.We can never expect ____ bluer sky u...

1.We can never expect ____ bluer sky unless we create _____less polluted world.

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

 

A 【解析】 试题分析: sky和world是独一无二的东西,通常会用定冠词the来修饰,但因为它们前有形容词来修饰,就表示泛指,表示会出现一个什么样的天空和世界呢,故都填不定冠词a.故选A。 考点:本题考察冠词的用法。
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   B. By going on for higher degrees.

   C. By breaking out of low-paying jobs.

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A.  According to Baum's research, high school graduates earn more than those who have college degrees.

B.  College education is enough to ensure you a good life.

C.  Nonmonetary benefits from the degree attract students more than monetary ones.

D. Students from low-income families still think degrees are profitable to change their life.

 

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