高三一轮复习：高考英语阅读理解100篇(30)

2015-04-09 09:32:16来源：网络

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　　2015年高考正在紧张的备考阶段，高考英语的学习依然至关重要，不仅靠知识的积累和运用，同时也需要学习的方法和做题的技巧，为了帮助广大考生攻克高考英语的学习，新东方在线高考网为大家整理了高考英语复习资料和解题技巧，以下是《高三一轮复习：高考英语阅读理解100篇(30)》，供考生们参考学习。

　　Annealing is a way of making metal softer by heating it and then letting it cool very slowly. If metal is heated and then cooled very quickly, for example by dipping (浸) it in water, it will be very hard but also very brittle (脆) that is, it will break easily. Metal that has been annealed is soft but does not break as easily. It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly for a certain length of time. The longer the heated metal takes to cool slowly, the softer it becomes. Annealing can also be used on other material, such as glass.

　　1. Annealing can make metal .

　　A.hardand tough(韧) B. hard but brittle C. soft but tough D. soft and brittle

　　2. Why do people put hot metal in water?

　　A.Tomake it hard B. To make it soft. C. To make it cool. D. To make it brittle.

　　3. In annealing, the required hardness of a metal depend on .

　　A. the quantity of water used B. the temperature of the metal

　　C. the softness of the metal D. the timing of the operation

　　4. As suggested by the text, how can glass be made less brittle?

　　A. It can be heated an then cooled quickly. B. It can be cooled and then heated slowly.

　　C. It can be heated and then cooled slowly. D. It can be cooled and then heated quickly.　

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