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问题 单项选择题

用于从疟疾流行区归来的外来人员传播的药物是（）

A.氯喹

B.奎宁

C.青蒿素

D.伯氨喹

E.蒿甲醚

答案

参考答案：A

解析：对高疟区与暴发流行区的人群和流行区的外来人员，可酌情选用乙胺、氯喹或甲氟喹，每周1次。

改错题

假如英语课上老师要求你修改你同桌写的一篇作文，文中共有10处语言错误，请在错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下面划一横线，并在该词下面写出改正后的词。

注意：

1．每处错误及其修改均仅限一词；

2．只允许修改10处，多者（从第11处起）不计分。

Dear editor,

Next year I'll go to university and becoming a college student, and I have never been away from my parents．I don't know what to face my university life．I hear many new students are at a loss when we are at university．They can't take care of themselves in everyday life, and often feel lonely and homesick．Clothes, money or mobile phone are sometimes gone．And because different weather and food, they often get ill．Some even rent rooms outside the campus, which I don't think it is so safely． Could you tell me how to deal with these problems so that I would be able to get used the university life in the future．
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单项选择题

用置于透照区中心附近的铂—钨双丝透度计可以从射线底片上测出一定管电压下的（）

A.吸收系数；

B.散射因子；

C.固有不清晰度；

D.形状修正系数。
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