题目内容

3.What do Lenordo da Vinci,Paul McCartney,and Albert Einstein have in common?They were all left-handed,along with other famous people including Pablo Picasso,Prince William,and Marilyn Monroe.In fact,an estimated 11percent of Americans and Europeans are left-handed.
Most people around the world are right-handed.This fact also seems to have held true throughout history.In 1997,scientists studied works of art made at various times history starting with cave drawings from 15,000B.C.and ending with paintings from the 1950s.Most of the people shown in these works of art are right-handed,so scientists guessed that right-handedness has always been common.
Many researchers claim to have found relationships between left-handedness and various physical and mental characteristics,such as blond hair,blue eyes,vegetarianism,and sleep difficulties.Other studies have found a higher-than-normal level of left-handed people in certain occupations,including professional baseball and tennis players,architects,lawyers,as well as prisoners.However,some of these connections are very weak,and others haven't been proven.
What makes a person become right-handed rather than left-handed?As yet,no one really knows for sure.One simple idea suggests that people normally get right-handedness from their parents.Studies have found that two right-handed parents have only a 9.5percent chance of having a left-handed child,whereas two left-handed parents have a 26percent chance of having a left-handed child.Another common theory is that left-handed people suffer mild brain damage during birth,which makes them left-handed.However,if this theory were true,it wouldn't explain why the percentage of left-handed people is so similar in every society,when birth conditions vary so much from society to society.
Whatever the reasons behind it,people's attitudes toward left-handedness have changed a lot over the years.Statistics show that although 13percent of young people (10-20years old) are left-handed,only 6percent of the elderly are left-handed.Left-handed children used to be punished until they began using their right hand like other children,but today people who are left-handed are no longer looked down on nor are they considered abnormal.For most people today either case is perfectly acceptable.There are even a number of shops now that specialize in selling products designed for left-handed people,such as left-handed scissors,can openers,guitars,and even a left-handed camera.
In 1976,Left-Handers International,a group of left-handed people in Topeka,Kansas,in the United States,decided to start an annual event in order to clear up misunderstandings about left-handedness.They decided that August 13th is International Left-Handers Day,and to this day groups of left-handed people around the world celebrate their own special day.

45.What does the third paragraph describe?C
A.why people with certain characters are better at certain jobs
B.reasons why left-handed people are better at some jobs
C.links between left-handedness and certain occupations and characteristics
D.why people are left-handed
46.What makes a person right-handed?D
A.the person's parents                 B.society
C.the person's birth                   D.The reason is uncertain
47.What can be assumed about the children of two left-handed parents?B
A.Most of them are left-handed.B.Most of them are right-handed
C.Most of them use both hands equally.D.Very few of them are right-handed.
48.Today,only 6percent of the elderly are left-handed because left-handed people…D
A.can be treated by doctors today.B.die younger.
C.are thought of as abnormal.D.were often forced to become right-handed.

分析 本文讲述在世界上多数人时右手使用者,科学家从历史美术作品中也得到这种结果,就此科学家们针对为什么右手使用者比左手使用者多作的一些发现和推测.

解答 45-48 CDBD
45.C.细节理解题.根据本段开头一句Many researchers claim to have found relationships between left-handedness and various physical and mental characteristics以及后面一句Other studies have found a higher-than-normal level of left-handed people in certain occupations可知,本段的主要内容是探讨的左手和特定职业以及性格的关系;故选C.
46.D.细节理解题.根据第四段中What makes a person become right-handed rather than left-handed?As yet,no one really knows for sure.可知,至于人们为什么习惯使用右手其原因是不为人知的,故选D.
47.B.推理判断题.根据第四段中Studies have found that two right-handed parents have only a 9.5percent chance of having a left-handed child,whereas two left-handed parents have a 26percent chance of having a left-handed child可知,父母都是习惯使用右手,他们孩子为左撇子的几率为9.5%;而父母同时都是左撇子的,孩子为左撇子的几率为26%,由此可推断B项为正确选项.
48.D.细节理解题.根据第五段Left-handed children used to be punished until they began using their right hand like other children可知,习惯用左手的孩子经常受到惩罚直到他们改为使用右手;故选D.

点评 阅读理解题通常从细节,文章主旨,推测词组大意几个方面考查学生对文章的理解,做题时注意找到文章出处,做到有理有据.

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