题目

请用下列物质的序号填空:①石墨②干冰③氮气④生石灰 （1） 可用于人工降雨的物质是 ; （2） 用来制干电池电极的是; （3） 可用于食品防潮剂的物质是; （4） 可用作保护气的是。 答案：【1】② 【1】① 【1】④ 【1】③此题要求改正所给短文中的错误，对标有题号的每一行作出判断，如无错误在该行右边横线上画一个勾，如有错误，则按下列情况改正：此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。此行缺一个词：在缺词处加一个漏字符号，在该行右边横线上写出该加的词。此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。注意：原行没有错的请不要改。Next week I’m going to see my teacher who teaches me            【小题1】.. __________English in the middle school. She just completed thirty            【小题2】.. __________years of teaching and gained rich experience in his                【小题3】. __________work. What lively and interesting her classes were!                【小题4】.. __________The way she taught English impressed us great. I found             【小题5】.. __________I had great difficulty with English grammar the moment             【小题6】. __________I entered in the school. It was she who immediately                【小题7】.__________came to help. With her help, I made great progresses               【小题8】. __________in English. Once I even got first place in an English              【小题9】. __________examination. I owe my thank to her, my English teacher.            【小题10】. __________