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问题 单项选择题 A1/A2型题

为了保存浆膜腔积液中化学成分，应加入的抗凝剂为（）。

A.冰乙酸

B.肝素

C.盐酸

D.甲醛

E.麝香草酚

答案

参考答案：B

解析：理学检查和细胞学检查宜采用EDTA-Na2抗凝，化学检查宜采用肝素抗凝。

单项选择题

下述判断不正确的是哪项（）

A．城乡居民储蓄存款年底余额逐年增长

B．农民的存款年底余额所占比重逐年上升

C．到1984年农民存款年底总余额已超过了城镇居民的存款总额

D．城镇居民存款年底余额所占的比重逐年下降
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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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