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7.The announcement of Nobel Prize winners every December is a great scientific event.______,not all
scientists are happy about it.(  )
A.BesidesB.ThereforeC.HoweverD.Otherwise

分析 每年十二月份宣布诺贝尔获奖者都是科学界的一大盛事,然而,不是所有科学家都会为此高兴.

解答 答案:C
题干中The announcement of Nobel Prize winners every December is a great scientific event表达的是肯定的意思;后一句not all scientists are happy about it表示的是部分否定,说明两个句子之间构成转折关系;besides此外,表示递进;Therefore因此,表示因果;However然而,表示转折;otherwise否则,表示条件.根据句意表示转折,故选C.

点评 并列连词用来连接并列句.常用的并列连词有:表并列关系的and,neither…nor.,either…or…,as well as,not only…but also…;表转折关系的but,yet,however,still,while;表选择关系的either…or…,neither…nor…,or,otherwise;表因果关系的for,therefore,so,学习时要加以区分和掌握.

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