3、防止金屬身銹的方法 (1) (2) (3)
自行車防銹的措施 (1) (2) (3)
2、鐵生銹的原因
影響鐵生銹的因素
1、化學方程式(1)鐵在氧氣中燃燒 (2)鋁在氧氣中燃燒
3、實驗室CO還原Fe2O3的化學方程式
實驗現(xiàn)象:
尾氣處理方法
1、鐵礦石的種類:赤鐵礦石主要成分 (化學式)磁鐵礦石主要成分
菱鐵礦石主要成分FeCO3 黃鐵礦石主要成分FeS2
2\鐵的冶煉 (1)原理:在高溫下利用焦碳與氧氣反應生成 把鐵從它的鐵礦石中冶煉!
(2)原料:鐵礦石、焦碳、石灰石、空氣
燈泡中的鎢絲利用金屬 金項鏈利用金屬
2、合金屬于 物
第二節(jié) (2010·全國II)短文改錯(共10小題;每小題1.5分,滿分15分)
此題要求改正所給短文中的錯誤。對標有題號的每一行作出判斷:如無錯誤,在答題卡相應的位置上畫一個勾(√);如有錯誤(每行只有一個錯誤),則按下列情況改正:
此行多一個詞:把多余的詞寫在答題卡相應的位置上,用斜線(\)劃掉。
此行缺一個詞:在答題卡相應的位置上寫出該加的詞,并附帶前(后)詞。
此行錯一個詞:在答題卡相應的位置上寫出該錯詞和改正后的詞。
注意:原行沒有錯的不要改。
Christie was one of my best friend at high school. 76.
At that time, we often spend time together. 77.
Thank to her help, I made great progress in my 78.
study. Last year, she decided to study abroad. In 79.
other words, we would be separated for long time. 80.
Before her leaving off, I prepared a gift to show 81.
my best whishes to him. She said it was the best 82.
gift she has ever had. From then on, we’ve 83.
kept touch with each other through e-mails. I 84.
look forward to see her again in the near future. 85.
第一節(jié) 單詞拼寫(共10小題;每小題1分,滿分 10分)
根據(jù)下列句子及所給漢語注釋,在答題卡相應的位置上寫出空缺處各單詞的正確形式。(每空只寫一詞)
66. It’s no use _____(后悔) what you have done.
67. When building____(材料) cost more, the price of houses increases.
68. The Spring Festival is the most important Chinese_____(傳統(tǒng)的) festival.
69. _______(園藝) is an activity which can help keep people healthy.
70. Please put two ________(勺) of sugar into the coffee.
71. There are perhaps two main _________(結論) to be drawn for the above discussion.
72. _______(十月) 1st this year is the 60th anniversary of our country.
73. It ______(有希望) to be fine tomorrow.
74. She _____ (折疊) up the letter and put it in her pocket.
75. The Bird’s Nest has become an______ (景點), which draws thousands of visitors every day.
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