阅读理解

　　Different weather makes people feel different．It influences(影响)health, intelligence(智力)and feelings．

　　In August, it is very hot and wet in the southern part of the United States．People there have heart trouble and other kinds of health problems during this month．In the Northeast and the Middle West, it is very hot at some times and very cold at other times．People in these states have more heart trouble after the weather changes in February or March．

　　The weather can also influence intelligence．For example, in a 1983 report by scientists．IQ(智商)of a group of students was very high when a very strong wind came, but after the strong wind, their IQ was 10％ lower．The wind can help people have more intelligence．Very hot weather, on the other hand, can make it lower．Students in many schools of the United States often get worse on exams in the hot months of the year(July and August)．

　　Weather also has a strong influence on people'8 feelings．Winter may be a bad time for thin people．They usually feel cold during these months．They might feel unhappy during cold weather．But fat people may have a hard time in hot summer．At about 18℃, people become stronger．

　　Low air pressure(气压)may make people forgetful．People leave more bags on buses and in shops on low－pressure days．People feel best at a temperature of about 18℃．

　　Are you feeling sad, tired, forgetful, or unhappy today?It may be the weather's problem．

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阅读理解。

　　Different weather makes people feel different,It influences health,intelligence(智力)and feelings．

　　In August,it is very hot and wet in the southern part of the United States．People there have heart trouble and other kinds of health problems during this month．In the northeast and the Middle West,sometimes it is very hot and sometimes very cold．People in these states have more heart trouble after the weather changes in February or March．

　　The weather can also influence intelligence．For example,in a 1983 report by scientists the IQ(智商)of a group of students was very high when a very strong wind came,but after the strong wind,their IQ was 10% below．The wind can help people have more intelligence．Very hot weather; on the other hand,can make it lower．Students in many schools of the United States often don't do very well in exams in the hot months of the year(July and August)．

　　Weather also has a strong influence on people's feelings．Winter may be a bad time for thin people．They usually feel cold during these months．They might feel unhappy during cold weather．But fat people may have a hard time in hot summer．At about 18℃,people become stronger．

　　Low air pressure(气压)may make people forgetful．People more possibly leave bags on buses or in shops on low air pressure days．

　　Are you feeling sad,tired,forgetful,or unhappy today?It may be the weather's problem．Of course,there is“good weather”for work and health．People feel best at a temperature of about 18℃．

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阅读理解

　　American black bears have different kinds of colors despite(不管)their names．In the eastern part of their living area, most of them are brown, red, or even yellow．In the north, the black bear is actually gray or white in color．Even in the same litter, both brown and black furred bears may be born．

　　Black bears are the smallest of all American bears．They are from five to six feet in length, and weigh from three hundred to five hundred pounds．Their eyes and ears are small and their eyesight and hearing are not as good as their sense of smell．

　　Like all bears, the black bear is shy, clumsy(笨拙的), and hardly dangerous, but it attacked, most can climb trees and cover ground at great speeds．When angry or frightened, it is a frightening enemy．

　　Black bears feed on leaves, herbs(草本植物), fruit, berries, insects, fish, and even larger animals．One of the most interesting characteristics of bears, is their winter sleep．Although the bear does not eat and drink during the winter months, sustaining itself from body fat, its temperature is almost the same as its usual．And it breathes regularly four or five times per minute．

　　Most black bears live alone, except during the mating season．They like to live in caves, hollow logs, or thick thickets better．Cubs are born in January or February, and they live with their mother until they are fully grown or about one and a half years old．Black bears can live as long as thirty years in the wild, and even longer in game preserves(野生动物保护区)set aside for them．

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阅读理解。阅读下列材料，从A、B、C、D四个选项中选出最佳答案。

　　Different weather makes people feel different．It influences health, intelligence(智力)and feelings．

　　In August, it is very hot and wet in the southern part of the United States．People there have heart trouble and other kinds of health problems during this month．In the Northeast and the Middle West, it is very hot at some times and very cold at other times．People in these states have more heart trouble after the weather changes in February or March．

　　The weather can also influence intelligence．For example, in a 1983 report by scientists, IQ(智商)of a group students were very high when a very strong wind came, but after the strong wind, their IQ was 10％ below．The wind can help people have more intelligence．Very hot weather, on the other hand, can make it lower．Students in many schools of the United States often get worse on exams in the hot months of the year(July and August)．

　　Weather also has a strong influence on people's feelings．Winter may be a bad time for thin people．They usually feel cold during these months．They might feel unhappy during cold weather．But fat people may have a hard time in hot summer．At about 18℃, people become stronger．

　　Low air pressure may make people forgetful．People leave more bags on buses and in shops on low-pressure days．People feel best at a temperature of about 18℃．

　　Are you feeling sad, tired, forgetful, or unhappy today? It may be the weather's problem．

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