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问题 填空题

用一张边长分别为10cm、8cm的矩形纸片做圆柱的侧面，所得圆柱的底面半径为______（结果可带π）．

答案

当10为底面周长时，圆柱的底面半径为：10÷2π=

5
π
cm；

当8为底面周长时，圆柱的底面半径为：8÷2π=

4
π
cm．

单项选择题

（）式开关电源早期有所采用，现在很少采用。

A、正激式

B、反激式

C、推挽式

D、桥式
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改错题

第Ⅱ卷（非选择题　共35分）

第三部分　写作（共两节，满分35分）

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，请你修改你同桌的以下作文。文章共有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.每处错误及修改词均仅限一词；

　　　2.只允许修改10处，多者（从11处起）不记分。

Dear Editor,

I' m writing to tell you about a food poisoning accident. Several days -ago, my neighbor ate　a bag of food buying from the market. After the meal, they had stomachaches and their faces　turn pale. Fortunately, one of their friends found the accident and immediately called on an　ambulance, which carded them quickly to a hospital. After several hours' treatment they finally escaped from death.

As some illegal businessmen only interested in making profits to become rich quickly, we seldom care about the necessary safety measures or care which happens to consumers. They must be charged with law. Meanwhile, I do hope whole society can realize the important of food safety and begin taking action together to make sure food is safe.

Yours,

Wang Ming
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