There are two factors which determine an individuals intelligence. The first is the sort of brain he is born with. Human brains differ considerably , some being more capable than others. But no matter how good a brain he has to begin with, an individual will have a low order of intelligence unless he has opportunities to learn. So the second factor is what happens to the individual the sort of environment in which he is brought up. If an individual is handicapped environmentally, it is likely that his brain will fail to develop and he will never attain the level of intelligence of which he is capable.
The importance of environment in determining an individuals intelligence can be demonstrated by the case history of the identical twins, Peter and Mark. Being identical, the twins had identical brains at birth, and their growth processes were the same. When the twins were three months old, their parents died, and they were placed in separate foster homes. Peter was raised by parents of low intelligence in an isolated community with poor educational opportunities. Mark was reared in the home of well-to-do parents who had been to college. He was read to as a child, sent to good schools, and given every opportunity to be stimulated intellectually. This environmental difference continued until the twins were in their late teens, when they were given tests to measure their intelligence. Marks I. Q. was 125, twenty-five points higher than the average and fully forty points higher than his identical brother. Given equal opportunities, the twins, having identical brains, would have tested at roughly the same level.
21. This selection can best be titled ______.
A. Measuring Your Intelligence
B. Intelligence and Environment
C. The Case of Peter and Mark
D. How the Brain Influences Intelligence
22. The best statement of the main idea of this passage is that ______.
A. human brains differ considerably
B. the brain a person is born with is important in determining his intelligence
C. environment is crucial in determining a persons intelligence
D. persons having identical brains will have roughly the same intelligence
23. According to the passage, the average I. Q. is ______.
A. 85 .
B. 100
C. 110
D. 125
24. The case history of the twins appears to support the conclusion that ______.
A. individuals with identical brains seldom test at the same level
B. an individuals intelligence is determined only by his environment
C. lack of opportunity blocks the growth of intelligence
D. changes of environment produce changes in the structure of the brain
25. This passage suggests that an individuals I. Q. ______.
A. can be predicted at birth
B. stays the same throughout his life
C. can be increased by education
D. is determined by his childhood
参考答案:21. B 22. C 23. B 24. C 25. C
上一篇: 大学英语六级考试仔细阅读核心解题步骤
下一篇: 12月大学英语六级阅读新题型难点解析
鸡蛋有红皮、白皮、绿皮,有什么区别?
一线城市人才流出 杭州成为热门
习近平在十三届全国人大一次会议闭幕会上发表重要讲话
About Love 关于爱
全球幸福指数排行榜出炉 芬兰高居榜首 美国排名下滑
体坛英语资讯:Indonesian top shuttlers warm up for Asian Championships in China
儿科医生警告 过度使用触屏致儿童握笔难!
国际英语资讯:Facebook CEO Zuckerberg admits mistakes in data leak scandal
国内英语资讯:China to recycle waste from Pacific countries
无处可藏!科学家教你根据脸色来判断各种情绪
UK proposes coffee cup ‘latte levy’ 英国议员提议对外带咖啡杯征收“拿铁税”
2018两会:环保部负责人回应社会关切
国际英语资讯:1 dead, 14 missing after sand mining ship capsizes off Malaysia
世界上最致命的动物 第一名居然不是人类[1]
玩微信的25条社交礼仪,你能做到几条?句句扎心!
国际英语资讯:UN Security Council renews mandate of DPRK Panel of Experts
国内英语资讯:China urges efforts to ensure accomplishment of goals set in govt work report
报告显示 最适宜工作的公司都跑赢了大盘
国内英语资讯:No winner in trade war: Chinese Foreign Ministry
日本购物网站推出“牛蹄子凉鞋”一双2600元仍排队抢购
十大手机厂商推“快应用”对抗小程序
英语美文:你怎样过早晨,就怎样过一生
国内英语资讯:Top legislator stresses CPC leadership
世界上最致命的动物 第一名居然不是人类
Getting too close to the sun?
缅甸总统吴廷觉辞职
国务院总理李克强记者会要点摘录
国内英语资讯: Xi holds phone talk with Modi on bilateral ties
英语美文:能承受委屈,才能承受责任
国际英语资讯:Schools closed, flights canceled as fourth winter storm hits New York