(1)实验原理：NO₂通常为______ 气体，N₂O₄通常为_______气体。

NO₂ N₂O₄ 正反应为_______反应

(2)实验步骤：

(3)实验现象：

(4)实验分析及结论

第二节：书面表达： 下图表示的是一起行人横穿马路引起的交通事故。请你根据图画内容和要求写一篇短文,以便在英语课上发言。

1.　　　 介绍图画内容。 2. 对这一现象进行评论。

3 呼吁人们遵守交通规则。

台州中学2009-2010学年第一学期期中试题

第一节：短文改错(共10小题,每小题1分,满分10分)

假如英语课上老师要求同学们交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,要求你在错误的地方增加、删除、或修改某个单词。

增加：在缺词处加一个漏字符号(∧),并在其下面写上该加的词。

删除：把多余的词用斜线(\)划掉。

修改：在错的词下划一横线,并在该词下面写上修改后的词。

注意：1. 每次错误以及修改均限一词；

2. 只允许修改10处,多者从第十一处起不计分

　　　 As a student, I hate the exam system we are now used. This system may be a good way to test a student’s memory, and it can tell you nothing about a student’s ability. It does not good to students or teachers. As soon as a child begins the school, he enters a world of exams that will decide his future. In fact a good exam system should train a student to think himself,　　 　but it now does something like that. So students are encouraged to remember what is taught. The students who comes out first in the exam often may not be the best in their studies. It must be some better way to test a student true ability besides knowledge.　 And that is where we should do right now.