6.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 1,500B.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.
34.How many people in the world are left-handed now?A
A.Less than one sixth.
B.More than a half.
C.About 40%.
D.The passage doesn't tell us.
35.Which of the following has the closest meaning to the underlined word"damaged"in this passage?D
A.knocked
B.changed
C.broke
D.harmed
36.According to the passage,which of the following is NOT true?B
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.
37.The best title for this passage isC.
A.Scientists'New Inventions
B.Left-handed People
C.Which Hand
D.Different Brains,Different Hands.
分析 文章大意:本文講述在世界上多數(shù)人是右手使用者,科學家從歷史美術作品中也得到這種結果,就此科學家們針對為什么右手使用者比左手使用者多作的一些發(fā)現(xiàn)和推測.
解答 34.答案:A.細節(jié)推理題,根據原文句子Today,only about 10% to 15% of the world's population is left-handed.現(xiàn)在,只有大約世界人口的10%-15%是左手使用者.折算成分數(shù)少于六分之一,故選A.
35.答案:D.詞義猜測題,根據單詞所在的句子Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born.科學家已經發(fā)現(xiàn)大約40%的人成為左手使用者因為他們的腦總部被…當他們出生的時候.推測意思為"傷害"harm,被動語態(tài)填harmed,故選D.
36.答案:B.細節(jié)理解題,根據文章內容,左手使用者受右腦控制,使手和眼協(xié)調,右手使用者,受左腦控制,是思考和解決問題的中心,并沒有相關信息告知左手使用者比右手使用者聰明,故不對的選B.
37.答案:C.標題選擇題,根據Why are there more right-handed people than left-handed ones?為什么左撇子的人比左撇子多?及文章內容,可知主要講述左手使用者和右手使用者的不同和一些發(fā)現(xiàn),所以標題C比較符合.
點評 閱讀題型,要注重句子與句子之間、段落與段落之間邏輯關系以及對篇章的整體理解.根據所給問題選擇正確選項完成試題.