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 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】After studying works of art made at different times in history, the scientists found _______.
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．Less than one sixth. B．More than a half.
C．About 40%.D．The passage doesn’t tell us.
【小題3】What is the hand for most people used to do?
A．It’s used to find or hold things.
B．It’s used to work with 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．No one really knows what makes a person become right-handed.
B．Left-handedness is cleverer than right-handedness.
C．Today children are not made to use their right hands only.
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．Which HandD．Different Brains, Different Hands


【小題1】C
【小題2】A
【小題3】A
【小題4】B
【小題5】C

解析試題分析：本文主要討論的是左撇子還是使用右手的話題，從古到今，從科學(xué)到一般的看法，作者都做了詳細(xì)地闡述。
【小題1】C 細(xì)節(jié)題。根據(jù)第一段2,3行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說明C項(xiàng)正確。
【小題2】A 細(xì)節(jié)題。根據(jù)第一段最后一句Today, only about 10% to 15% of the world’s population is left-handed.說明A正確。
【小題3】A 細(xì)節(jié)題。根據(jù)文章第二段第二句For most people, the hand is used to find things or hold things.說明A正確。
【小題4】B 細(xì)節(jié)題。根據(jù)文章第3段No one really knows what makes a person become right-handed instead of left-handed.說明A正確，A long time ago, left-handed children were made to use their right hands like other children, but today they don’t have to.說明C正確。so scientists guess there must be another reason why people become left-handed.說明D正確。唯獨(dú)文章沒有提到左撇子比使用右手的人更聰明，故B項(xiàng)錯(cuò)誤。
【小題5】C 主旨大意題。本文主要討論的是左撇子還是使用右手的話題，從古到今，作者都做了詳細(xì)地闡述。故C項(xiàng)正確。
考點(diǎn)：考查科普說明文
點(diǎn)評(píng)：本文主要討論的是左撇子還是使用右手的話題，科普類說明文最大的障礙是詞匯以及考生對(duì)閱讀內(nèi)容的不熟悉，需要考生在閱讀的時(shí)候有足夠的耐心。要養(yǎng)成在上下文串聯(lián)中猜測詞義的能力，根據(jù)上下文中出現(xiàn)的同義詞，近義詞，反義詞，以及詞義的解釋來理解生詞。同時(shí)要抓住文章的中心，不要受其他信息的影響。要根據(jù)題目及選項(xiàng)以及文章的上下文串聯(lián)合理的判斷推理。

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