D

　　When water is heated until it boils， bubbles of gas appear and rise through the hot liquid. When an electric current passes through water in a process called electrolysis (電解)， bubbles of gas appear and rise through the liquid. Superficially (表面地)， the two events appear same.

　　If the gas from the boiling water is examined， its properties are found to be the same as those of the water， Thus， if the steam is cooled to room temperature， a liquid is formed which is indistinguishable from the original water. When， however， the gas from the electrolysis equipment is cooled to room temperature， it remains a gas rather than becoming a liquid. Nor will it， at zero degrees centigrade or below， turn to solid， as will the gas from boiling water， These two processes， boiling and electrolysis， have clearly resulted in products with quite different properties.

　　In boiling， the gas does not represent a new substance， but only a different state of the original substance. Electrolysis， on the other hand， has generated a product which is a new substance， or possibly a mixture of new substances. A change in state as represented by going from a liquid to a gas without the production of new substances in called a “physical change”。 However， when a process takes place that produces new substances， this is called a “chemical change” or a “chemical reaction”。 In a chemical reaction， the initial substances are replaced by a new set of substances or products.

　　( )63. Which of the following is the best title for this passage?

　　A. Electrolysis B. Physical and Chemical Changes

　　C. Different Types of Water D. Water Temperatures

　　( )64. At a temperature slightly above zero degrees centigrade， which of the following is true of gas produced by electrolysis?

　　A. It does not become liquid. B. It cannot be distinguished from water.

　　C. It becomes a solid. D. It expands greatly.

　　( )65. The passage is developed in the way of ________.

　　A. argumentation B. narration

　　C. comparison D. listing examples

　　五、補全對話(共5句;每句滿分為3分，共15分。)

　　根據(jù)中文提示，將對話中缺少的內(nèi)容寫在線上。這些句子必須符合英語表達習(xí)慣，打句號的地方，用陳述句;打問號的地方，用疑問句。

　　提示：Wilson太太的丈夫生病了，發(fā)燒，頭疼德厲害。她打電話給格林醫(yī)生，請他們到家里來一趟。格林醫(yī)生簡單詢問情況后，答應(yīng)馬上就到。

　　Mr. Wilson：Hello， this is Alice. Is Dr. Green there?

　　Dr. Green ：Yes， _________66________.

　　Mr. Wilson：Dr. Green， sorry to call you up at this time of the day. But my husband is very sick. I am rather worried. _________67_________?

　　Dr. Green ：Yes， certainly. _________68_________? It will help me to decide what to prepare before I come.

　　Mr. Wilson：Well， I can‘t tell exactly， but _________69_________.

　　Dr. Green ：All right then. Don‘t worry. Keep him in bed. _________70_________.

　　Mr. Wilson：I‘ll do that， Dr. Green. See you soon.

　　Dr. Green ：See you.

　　六、書面表達(共30分)

　　提示：請根據(jù)以下平面圖寫一篇短文向人介紹你們學(xué)校。

　　注意：(1)要包括圖中所有內(nèi)容，且敘述要連貫;

　　(2)詞數(shù)為100左右。

　　編輯推薦：

　　2011年成人高考考前沖刺精選資料專題

　　成考英語備戰(zhàn)：專升本英語作文范文八篇

　　2011年成人高考(專升本)高等數(shù)學(xué)必背資料匯總