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问题 多项选择题

以下哪些是氧化还原滴定法中使用的滴定液（）

A.氢氧化钠滴定液

B.硫酸铈滴定液

C.高氯酸滴定液

D.碘滴定液

E.乙二胺四醋酸二钠滴定液

答案

参考答案：B, D

解析：不同滴定分析法使用的滴定液：酸碱滴定法常用盐酸、硫酸、氢氧化钠滴定液；氧化还原滴定法常用碘滴定液、硫代硫酸钠滴定液、硫酸铈滴定液、亚硝酸钠滴定液；非水溶液滴定法常用高氯酸滴定液、甲醇钠滴定液；配位滴定法常用乙二胺四醋酸二钠滴定液。

阅读理解

There were many people at the station. Some were waiting for the train, some were reading newspapers, and some were saying good-bye to their friends or families.

Mary, Jane and Alice were talking so happily that they didn’t know their train was going to leave. At that time the guard called loudly, “The train is leaving. Please hurry.” The three girls heard the guard and two of them jumped onto the train quickly before the train moved. One was left behind. It was Mary. She looked very sad. The guard came up to her and said, “Don’t feel sad. The next train will come in ten minutes.”

“I know.” Mary answered, “But it was my train. My friends only came here to say good-bye to me.”

根据短文内容判断正（T）误（F）。

小题1:There are many people at the bus station.

小题2:Maria and her friends were reading newspaper at the station.

小题3:The guard told them to get on the train.

小题4:Jane was left behind.

小题5:Mary came to the station to say good-bye to her friends.
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单项选择题 A1/A2型题

原发性三叉神经痛治疗首选（）

A.卡马西平等药物

B.维生素B族药物

C.封闭治疗

D.半月神经节射频电凝疗法

E.三叉神经微血管减压术
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