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问题 选择题

“奥运会”严格禁止运动员服用兴奋剂。关于某种兴奋剂（结构简式如图）的以下说法中，正确的是                                                   （   ）

A．该物质属于芳香烃

B．1mol该物质最多能与7molH2加成

C．该物质分子结构中存在7个碳碳双键

D．该物质的分子式为C20H25O3

答案

答案：B

改错题

下面文中共有10处错误，每句中最多有两处。错误涉及单词的增加、删除或修改。

增加：在缺词处加一个漏词符号八，并在此符号下面写出该加的词。

删除：把多余的词用斜线、划掉。

修改：在错词下面划一横线，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处不计分。．

Dear Editor,

I'm a senior high student in a key school of Banding city.  I'm fond of play basketball  It is known by us that the college entrance examination is approaching and we should get good prepared for it.  Thus I had no choice but play basketball just on holidays.  However, I really hope to do it every day, and my parent insist that I give it up.  They think learning is their first task and I should throw whole of myself into study.  How do you think of it? Could you give me some advice on how to deal with the problem?

I am looking forward to your early reply.

Li Hua
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单项选择题

关于活动目录的描述中，错误的是( )。

A．活动目录包括目录和目录服务

B．域是基本管理单位，通常不再细分

C．活动目录采用树状逻辑结构

D．通过域构成树，树再组成森林
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