Most people around the world are right-handed. This also seems to be true in his

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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.
小题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.
小题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.

小题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.

小题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.

小题5:The best TITLE for this passage is _______.

A．Scientists’ New Inventions	B．Left-handed People
C．How Brains Control Hands	D．Which Hand

答案

小题1:C
小题2:A
小题3:B
小题4:A
小题5:D

解析

试题分析：短文叙述了全世界大多数人都是右撇子。历史上似乎也是如此。1799年,科学家研究的艺术作品在不同时期从公元前1500年到1950年代。这些展示的大多数人是右撇子的作品,因此科学家们猜测, 右撇子一直是常见的。如今,只有约10%至15%的世界人口是左撇子。现在虽然右撇子比左撇子更常见,但是人们不再认为左撇子是奇怪的或不寻常的。
小题1:细节理解题。问题：科学家们发现在研究历史上的艺术作品在不同的时间吗?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：这些作品所示的大多数人是右撇子,因此科学家们猜测,右撇子在历史中一直是常见的。故选C
小题2:细节理解题。问题：现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,只有约10%至15%的世界人口是左撇子。故选 A
小题3:细节理解题。问题：左手对大多数人用来做什么?分析原文：For most people, the left hand is used to find things or hold things.句意：对大多数人来说,左手是用来找东西或持着东西。故选B
小题4:细节理解题。问题：通过上文哪一个描述是错误的？通读全文的过程中并没有科学依据说明左撇子的人比右撇子的人聪明。故选A
小题5:标题归纳题。问题：短文最佳的题目是什么？全文都在讲述人在运用两只手时的不同，有的用左手，有的用右手，从而对其进行分析。因此选项中第四项符合题意。故选D