6、所有的稀有气体都是单原子分子而误认为双原子分子。
5、要求写“名称”却写分子式或其他化学式,要求写分子式或结构式却写名称。电子式、原子或离子结构示意图、结构简式、结构式不看清,张冠李戴。要求写离子方程式而错写成化学方程式。
4、有单位的要写单位,没有单位的就不要写了。如“溶解度”单位是克,却不写出,“相对分子质量”、“相对原子质量”无单位,却加上“g”或“g.mol-1”。摩尔质量有单位(g.mol-1)却不写单位,失分。
3、别忽视题干中 “混合物”、“化合物”、“单质”等限制条件。
2、书写化学方程式时,分清是等号还是可逆号,如一种盐水解方程式一定用可逆号不能用等号,其产物也不能标“↓”或“↑”,弱酸、弱碱的电离一定要用可逆号不能用等号。
1、排列顺序时,分清是“由大到小”还是“由小到大”,类似的,“由强到弱”,“由高到低”,等等。
第二节 书面表达(满分25分)
请看《中国日报》的报道: The "illegal cooking oil" is usually made from discarded kitchen waste that has been refined, the report said, adding that the oil, which contains a highly toxic and carcinogenic substance called "aflatoxin", can cause cancer. 该报告称,“地沟油”通常使用餐厨垃圾提炼而成,成分中含有的黄曲霉素毒性很强,可致癌。
使用illegal cooking oil已成为餐饮行业的open secret(公开的秘密)。国家药监局近日发布紧急通知,要求严防“地沟油”流入餐饮服务环节,对于违反单位,情节严重的将吊销其餐饮服务许可证。
请你就此谈论你读了该新闻的感受。要求:词数120左右,行文连贯,
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第一节 短文改错(共10小题;每小题1分,满分10分)
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初语言错误,每句中最多有两处。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(每行只有一个错误),则按下列情况改正:
删除: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。
增加:在缺词处加一个漏字符合(^),在该行右边横线上写出该加的词。
修改:在错的词下划-横线,在该行右边横线上写出改正后的词。
注意:1.每处错误及其修改均仅限一词;
2.至允许修改10处,多者(从第11处起)不计分。
Dear Mr. Johnson,
I’ve learned from a newspaper that some clerks are wanting in your company. I am eager to being one of them. So I am writing the letter. My name is zhang Hua. I was born in the Hebei Province and I am in good health. I’ve just graduated in the Computer Department of Wuhan University. I did very good in all subjects and I am especial good at computer studies and English. I can read science books in English and doing some writing in English as well.
Beside, I know a little French. And in my spare time, I enjoy playing basketball. As is said that your company is very famous and I’ll very glad if you let me work for it. My telephone number is 027-89276628.I am looking forward to hearing from you soon.
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