6、所有的稀有氣體都是單原子分子而誤認為雙原子分子。
5、要求寫“名稱”卻寫分子式或其他化學式,要求寫分子式或結(jié)構(gòu)式卻寫名稱。電子式、原子或離子結(jié)構(gòu)示意圖、結(jié)構(gòu)簡式、結(jié)構(gòu)式不看清,張冠李戴。要求寫離子方程式而錯寫成化學方程式。
4、有單位的要寫單位,沒有單位的就不要寫了。如“溶解度”單位是克,卻不寫出,“相對分子質(zhì)量”、“相對原子質(zhì)量”無單位,卻加上“g”或“g.mol-1”。摩爾質(zhì)量有單位(g.mol-1)卻不寫單位,失分。
3、別忽視題干中 “混合物”、“化合物”、“單質(zhì)”等限制條件。
2、書寫化學方程式時,分清是等號還是可逆號,如一種鹽水解方程式一定用可逆號不能用等號,其產(chǎn)物也不能標“↓”或“↑”,弱酸、弱堿的電離一定要用可逆號不能用等號。
1、排列順序時,分清是“由大到小”還是“由小到大”,類似的,“由強到弱”,“由高到低”,等等。
第二節(jié) 書面表達(滿分25分)
請看《中國日報》的報道: 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. 該報告稱,“地溝油”通常使用餐廚垃圾提煉而成,成分中含有的黃曲霉素毒性很強,可致癌。
使用illegal cooking oil已成為餐飲行業(yè)的open secret(公開的秘密)。國家藥監(jiān)局近日發(fā)布緊急通知,要求嚴防“地溝油”流入餐飲服務環(huán)節(jié),對于違反單位,情節(jié)嚴重的將吊銷其餐飲服務許可證。
請你就此談論你讀了該新聞的感受。要求:詞數(shù)120左右,行文連貫,
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第一節(jié) 短文改錯(共10小題;每小題1分,滿分10分)
假定英語課上老師要求同桌之間交換修改作文,請你修改你同桌寫的以下作文。文中共有10初語言錯誤,每句中最多有兩處。對標有題號的每一行作出判斷:如無錯誤,在該行右邊橫線上畫一個勾(√)如有錯誤(每行只有一個錯誤),則按下列情況改正:
刪除:把多余的詞用斜線(\)劃掉,在該行右邊橫線上寫出該詞,并也用斜線劃掉。
增加:在缺詞處加一個漏字符合(^),在該行右邊橫線上寫出該加的詞。
修改:在錯的詞下劃-橫線,在該行右邊橫線上寫出改正后的詞。
注意:1.每處錯誤及其修改均僅限一詞;
2.至允許修改10處,多者(從第11處起)不計分。
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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