2022年江西成考专升本英语考试模拟试题(阅读理解D)

　　

　　四、阅读理解（共15小题；每题2分，共30分。）
　　阅读下列短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项，并把它前面的大写字母填入左边的括弧里。
　　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

　　

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