Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works of art made at different times from 1,500 B.C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world’s population is left-handed.
Why are there more right-handed people than left-handed ones? Scientists now know that a person’s two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person’s hands and eyes work together, controls the left hand. The left side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists as among people in other jobs.
No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born. However, this doesn’t happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene(基因) for right-handedness, he / she may become either right-handed or left-handed according to the chance and the people they work or live with.
Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don’t have to.
小題1: What did the scientists find after studying works of art made at different times in history?
A. The art began from 1,500 B.C.    
B. The works of art ended in the 1950s.
C. Most people shown in the works of art are right-handed.
D. Most people shown in the works of art are left-handed.
小題2:How many people in the world are left-handed now?
A．About 10%-15%.B．About 50%.
C．About 40%.D．The passage doesn’t tell us.
小題3:What is the left hand for most people used to do?
A．It’s used to work with things.
B．It’s used to find or hold things.
C．It’s used to make a person’s eyes work together.
D．It’s the centre for thinking and doing problems.
小題4:According to the passage, which of the following is NOT true?
A．Left-handedness is cleverer than right-handedness.
B．Today children are not made to use their right hands only.
C．No one really knows what makes a person become right-handed.
D．Scientists think there must be some reason why people become left-handed.
小題5:The best TITLE for this passage is _______.
A．Scientists’ New InventionsB．Left-handed People
C．How Brains Control HandsD．Which Hand

小題1:C
小題2:A
小題3:B
小題4:A
小題5:D

試題分析：短文敘述了全世界大多數(shù)人都是右撇子。歷史上似乎也是如此。1799年,科學(xué)家研究的藝術(shù)作品在不同時(shí)期從公元前1500年到1950年代。這些展示的大多數(shù)人是右撇子的作品,因此科學(xué)家們猜測(cè), 右撇子一直是常見(jiàn)的。如今,只有約10%至15%的世界人口是左撇子�，F(xiàn)在雖然右撇子比左撇子更常見(jiàn),但是人們不再認(rèn)為左撇子是奇怪的或不尋常的。
小題1:細(xì)節(jié)理解題。問(wèn)題：科學(xué)家們發(fā)現(xiàn)在研究歷史上的藝術(shù)作品在不同的時(shí)間嗎?分析原文：Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history.句意：這些作品所示的大多數(shù)人是右撇子,因此科學(xué)家們猜測(cè),右撇子在歷史中一直是常見(jiàn)的。故選C
小題2:細(xì)節(jié)理解題。問(wèn)題：現(xiàn)在世界上有多少人是左撇子？分析原文：today, only about 10% to 15% of the world’s population is left-handed.句意：如今,只有約10%至15%的世界人口是左撇子。故選 A
小題3:細(xì)節(jié)理解題。問(wèn)題：左手對(duì)大多數(shù)人用來(lái)做什么?分析原文：For most people, the left hand is used to find things or hold things.句意：對(duì)大多數(shù)人來(lái)說(shuō),左手是用來(lái)找東西或持著東西。故選B
小題4:細(xì)節(jié)理解題。問(wèn)題：通過(guò)上文哪一個(gè)描述是錯(cuò)誤的？通讀全文的過(guò)程中并沒(méi)有科學(xué)依據(jù)說(shuō)明左撇子的人比右撇子的人聰明。故選A
小題5:標(biāo)題歸納題。問(wèn)題：短文最佳的題目是什么？全文都在講述人在運(yùn)用兩只手時(shí)的不同，有的用左手，有的用右手，從而對(duì)其進(jìn)行分析。因此選項(xiàng)中第四項(xiàng)符合題意。故選D
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