下列句子中,标点符号使用正确的一项是 (    ) A.他今天为什么

下列句子中,标点符号使用正确的一项是 (    )

A.他今天为什么没上场?是临场胆怯,是身体不舒服?

B.消防队长石中玉喊了一声:”跟我来!”就向宏达家具城火灾现场冲了过去。

C.精简机构以后,南京宏远制衣有限公司改变了”四多一少”—临时机构多、管理人员多、服务人员多、辅助人员多,第一线生产人员少的状况。

D.原子弹由高浓度(93%)的裂变物质(主要是铀-235或钚-239)和复杂精密的引爆系统组成。

 

答案

D

 

A项是三句连问,后两句不是选择问,逗号改为问号;B项’跟我来’不能独立来用,只能作句子的一个部分,可删去冒号和感叹号,在下引号后加逗号;C项’临时机构……生产人员少’是解释’四多一少’,故破折号应用双用形式,否则界限不明。

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