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问题 单项选择题

粉煤灰混凝土配合比的设计强度等级、强度保证率、标准差及离差系数等指标应与（）相同，其取值应按现行国家有关标准规范执行。

A.高强混凝土

B.抗渗混凝土

C.基准混凝土

D.特殊混凝土

答案

参考答案：C

选择题

下列句子中，没有错别字的一句是

A．险峰出于钝石，明火炽于暗木，珍珠产于贱蚌，美玉啄于丑璞——多少事物在转折中得以升华。

B．忍住爱妻去逝的悲痛，他最终完成了这部煌煌巨著。

C．从窗子望出去，就可以看见一幅图画。那幅图画是妍是媸，是雅是俗，是闹是静，那就只好随缘。

D．笔是中国画的精骨，墨是中国画的血肉，论气韵先看笔墨，舍笔墨则无以谈气韵。
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填空题

Beijing: The United States and North Korea had their first ______ in four months here this afternoon as part of the ______ negotiations on how to end North Korea’s nuclear program, but diplomats played down prospects for______. James A. Kelly, assistant ______, and Kim Yong Ⅱ, North Korea’s deputy foreign minister, met ______ of formal discussions, ______ on direct dialogue that began after a stormy meeting ______ in which North Korea warned that it was moving quickly to ______ nuclear arms. The Bush administration had insisted ______ that it would only hold talks with North Korea ______ because, it argued, only ______ pressure would persuade North Korea to______. It got its way when North Korea dropped its insistence on ______ and agreed, after extensive efforts by China, to hold unusual simultaneous negotiations with ______,______,______ and ______ as well as the United States. Though Bush administration officials had not ______ talking privately with the North Koreans during______, the fact that Mr. Kelly and Mr. Kim met on the first day was seen as a sign of ______ by the American side.
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