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1、2015 贵阳市高考英语阅读理解和完形填空自选练习（贵阳市高考英语阅读理解和完形填空自选练习（1）答案（四月）答案（四月）【2015 高考复习】阅读理解Wisdom teeth are normally the last teeth to appear.This usually happens when people are in their late teen years or early twenties，in other words，when they are older and wiser.Wisdom teeth can grow into place normally and ne
2、ver cause a problem.But often there is not enough room for them in the mouth；they might crowd other teeth.Sometimes they even push sideways through the gums (齿龈)An impacted wisdom tooth is one that fails to completely rise through the gums.Wisdom teeth that only partly break through can leave space
3、for bacteria to enter around the teeth.Infection (感染) is a risk in these cases.Wisdom teeth that are not well lined and become impacted are often removed.The American Dental Association says removal is generally advised when wisdom teeth only partly break through the gums.Removal is also advised if
4、there is a chance that wisdom teeth ate poorly lined.The best time to remove is before the teeth cause any problems or pain.Young adults are the best candidates for wisdom teeth removal.But why do we have wisdom teeth if we often need to get them removed？One theory has to do with our diets.Scientist
5、s say the diet of ancient humans probably required more chewing teeth.Life was probably a little rougher on the teeth back then，too.So it was good to have extras.【语篇解读】 本文是一篇说明文。文章介绍了智慧之牙智齿。5According to the passage，which of the following statements is NOT true?AJust older and wiser people can have
6、wisdom teeth.BWisdom teeth can cause problems if not in their right place.CImpacted wisdom teeth cant grow out of the gum fully.DWisdom teeth that only partly break can get bacterial infections.解析 细节理解题。根据文章第一段可知，所谓的智齿是指在青少年晚期或二十岁出头长出的牙齿，而不是只有老人或智者才有的牙齿。答案 A6Wisdom teeth should be removed_.Awhen the
7、y break through the gumsBwhen they are below the gumsCif they are not well lined or get impactedDif they take up enough room in the mouth解析 细节理解题。根据文章第四段第一句“Wisdom teeth that are not well lined and become impacted are often removed.”可知，C 项正确。答案 C 7We can learn from the passage that_.Aimpacted wisdom
8、 teeth have the risk of getting infectedBancient humans need chewing teeth because of their happy lifeColder adults are the best candidates for wisdom teeth removalDmore chewing teeth are needed for the diet of modern humans解析 推理判断题。根据文章第三段可知，阻生智齿(即 impacted wisdom teeth)会在牙齿周围给细菌留出进入的空间，这就有被感染的风除。故
9、选 A。根据第四段最后一句可排除 C 项；根据最后一段可排除 B、D 两项。答案 A8The main purpose of the passage is to_.Aadvise Bpersuade Ccomment Dintroduce 解析 写作意图题。本文是一篇说明文。文章主要介绍了长智齿的大约时间、智齿可能导致的问题、拔掉智齿的时间、为什么长智齿等内容。所以本文写作的主要目的就是介绍。答案 D阅读理解阅读理解One reaction to all the concern about tropical deforestation is a blank stare that asks th
10、e question, “Since I dont live there, what does it have to do with me?“The answer is that your way of life, wherever you live in the world, is tied to the tropics in many ways. If you live in a house, wash your hair, eat fruits and vegetables, drink soda, or drive a car, you can be certain that you
11、are affected by the loss of tropical forests.Biologically, we are losing the richest regions on earth when, each minute, a piece of tropical forest, the size of ten city blocks, disappears. As many as five million species of plants, animals, and insects (40 to 50 percent of all living things) live t
12、here, and are being lost faster than they can be found and described. Their loss is immeasurable.Take rubber for example. For many uses, only natural rubber from trees will do. Synthetics are not good enough. Today over half the worlds commercial rubber is produced in Malaysia and Indonesia, while t
13、he Amazons rubber industry produces much of the worlds four million tons. And rubber is an important material in making gloves, balloons, footwear and many sporting goods. Thousands of other tropical plants are valuable for their industrial use.Many scientists strongly believe that deforestation con
14、tributes to the greenhouse effect - or heating of the earth from increased carbon dioxide in the atmosphere. As we destroy forests, we lose their ability to change carbon dioxide into oxygen.Carbon dioxide levels could double within the next half-century, warming the earth by as much as 4.5 degrees.
15、 The result? A partial melt-down of polar ice caps, raising sea levels as much as 24 feet; even 15 feet could threaten anyone living within 35 miles of the coast. Unbelievable? Maybe. But scientists warn that by the time we realise the severe effects of tropical deforestation, it will be 20 years to
16、o late.Can tropical deforestation affect our everyday lives? Now, you should have got the answer.11. The underlined word “synthetics“ probably means .A. natural rubber B. tropical materialsC. man-made material D. commercial rubber12. In the last paragraph the author tries to .A. tell people how to avoid the tropical deforestationB. persuade people to buy something syntheticC. sho
