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14.When building houses,people used to think about not only the climate of the areas but also the buiding materials and the fashions for their houses.However since electricity became more and more expensive,people began to pay much more attention to the energy they could get for their houses and the new ways they could find to protect their house from both cold and heat.
Now,houses of an old yet new type have been widely built.In some parts of the world,people share their houses with their livestock (家禽).During cold weather,they gather their cows,goats,or other animals and keep them on the first floor of their houses.The reasons are that the animals can be protected from the cold and that they can help to heat the houses as well.The body heat given off by the animals rises to the second floor of the houses,where people live.By sharing their houses with their livestock,people gain a source of heat.
People who live in or near cities do not usually keep livestock.However,home builders use the fact that heat rises.This naturallaw can be used in building houses in these areas.Instead of keeping livestock on the first floor,builders fill it with large rocks.As they are open to the sun's rays during cold weather,these rocks take in heat.They also give off the heat,and,of course,the warm air rises into the living areas of the houses.So these houses are energy-saving.
House-building becomes a great challenge to building designers and energy engineers.They try to meet this challenge by learning from old traditions and by using modern technology.And someday in the future,people will be able to live in more energy-saving houses.

44.What did people begin to consider as electricity was no longer cheap?B
A.The climate of their areas.
B.The energy for their houses.
C.The fashions for their houses.
D.The building materials for their houses.
45.People in some areas gain a source of heat byA?
A.keeping their livestock downstairs
B.protecting their livestock from the cold
C.sharing their houses only with their cows
D.living on the second floor with their livestock
46.The underlined words"natural law"in the third paragraph refer to the fact thatB
A.heat raises the temperature in the houses.
B.heat goes in the upward direction.
C.heat goes up if temperature is raised.
D.heat increases the temperature of rocks.
47.From the passage,we can conclude thatB.
A.people will no longer consider building materials in the future.
B.energy-saving buildings will become more popular in the future.
C.almost all people will move into the houses heated by large rocks.
D.energy engineers will devote themselves only to modern technology.

分析 本文是一篇社会文化类阅读,人们在建造房屋时,不仅考虑到地区的气候,还有建筑材料及房屋的风格.然而,随着电越来越贵,人们为了使房屋达到保暖驱寒的效果,更加注重新的保存能量的方式.本文以此展开,讲述了人们一些保存能量的方法.

解答 44.答案:B.细节理解题.根据第一段第二句"However since electricity became more and more expensive,people began to pay much more attention to the energy they could get for their houses and the new ways they could find to protect their house from both cold and heat."说明人们为了使房屋达到保暖驱寒的效果,更加注重新的保存能量的方式.故选B.
45.答案:A.细节理解题.根据第二段"In some parts of the world,people share their houses with their livestock (家禽).During cold weather,they gather their cows,goats,or other animals and keep them on the first floor of their houses."可知,他们让家禽住在楼下来获取热量.故选A.
46.答案:B.词意猜测题.由划线词所在句的上一句"However,home builders use the fact that heat rises."可知,that 引导同位语从句指代热量上升的原理,故"natural law"指代的也是热量上升的原理.故选B.
47.答案:B.推理判断题.根据第一段前两句知人们在房屋建设时依然需要考虑建筑材料.从第三段可知利用岩石吸热随后放热的方法只是针对生活在城市及城市郊区的人们,且只是其中的一种方法.故选B.

点评 本文是一篇社会文化类阅读,题目涉及多道细节理解题,推理判断题,词意猜测题,做题时学生应仔细阅读原文,把握文章主要内容,联系文章上下文内容并结合所给选项含义,从中选出正确答案,一定要做到有理有据,切忌胡乱猜测.

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