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问题 单项选择题

在肠外感染中很少分离到的病原菌为（）

A.大肠埃希菌

B.肺炎克雷伯菌

C.奇异变形杆菌

D.阴沟肠杆菌

E.志贺菌

答案

参考答案：E

解析：考查志贺菌致病机制。志贺菌感染只限于局部，不入血流，仅停留于肠壁，故在肠外感染中很少分离到。

填空题

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。 

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。 

删除：在错的词下划一横线，并在该词下面写出修改后的词。 

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。

The summer holiday is coming. My classmates and I are talking about how to do during the holiday. We can chose between staying at home and take a trip. If we stay at home, it is comfortable but there is no need to spend money. But in that case, we will learn little about world. If we go on a trip abroad, we can broaden you view and gain knowledges we cannot get from books. Some classmates suggest we can go to places of interest nearby. I thought that it is a good idea. It does not cost many, yet we can still learn a lot.

3（）
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问答题 简答题

写出肉桂药材的来源为哪个科、主含成分、并用一种理化方法鉴别之。
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