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问题 选择题

某同学为探究分子的特性，设计了如下四个实验，其中能说明分子在不断运动的是 [ ]

A．100mL酒精和100 mL水混合在一起体积小于200 mL

B．品红放入水中，整杯水逐渐变红

C．在过氧化氢溶液中加入二氧化锰后得到了氧气

D．两支分别装有相同体积空气和水的注射器，前者比后者容易压缩

答案

答案：B

改错题

短文改错。

     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。错误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。

修改：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）不记分。

Dear Ms Smith,

     I am secretary of the City Student Union (CSU). We were organizing an art exhibition for high school

students in city. This will be held on the 9th of July in the Exhibition Hall of Beihai. More than 1000 paining

will be on show, but high school students from all the eight districts will come to the event. As you are very

popularly with us Chinese high school students, we'd like to invite for you to the exhibition. We would be

grateful when you could join them that day. Looking forward to hear from you soon.

                                                                                                                                           Yours,

                                                                                                                                           Li Ming

_______________________________________________________________________________________
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选择题

对1967年到1968 年全国动乱时期经济形势的描述，其中不正确的是  [ ]

A．机构瘫痪，管理处于无政府的状态

B．交通运输阻塞，物质难以供应

C．市场供应平衡，日用品富裕

D．企业制度遭到废弃
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