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.
1. 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
2. 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
3. According to the passage, the average I. Q. is_______.
A. 85 . B. 100
C. 110 D. 125
4. 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
5. 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
答案:
BCBCC
牛津实用英语语法:170 see和 hear
牛津实用英语语法:189现在完成时和一般过去时
牛津实用英语语法:227 if和in case
牛津实用英语语法:209 一般将来时的用法
牛津实用英语语法:220 条件完成时
牛津实用英语语法:210 will同 want/wish/would like的比较
牛津实用英语语法:222 条件句类型2
牛津实用英语语法:159 can't和couldn't表示否定的推断
牛津实用英语语法:193 现在完成进行时进一步举例
牛津实用英语语法:247 用to代表的不定式
牛津实用英语语法:212 将来进行时用做一般的进行时态
牛津实用英语语法:196 过去完成时在间接引语中的用法
牛津实用英语语法:174其他用法
牛津实用英语语法:200 解释含有意图的将来
牛津实用英语语法:180过去式其他用法
牛津实用英语语法:204 be going to形式
牛津实用英语语法:202 现在进行时用来表示将来
牛津实用英语语法:199 一般现在时用来表示将来
牛津实用英语语法:218 从句时态的呼应
牛津实用英语语法:229 间接引语中的条件句
牛津实用英语语法:234 shall用于第二、第三人称
牛津实用英语语法:226 if,even if,whether,unless,but for,
牛津实用英语语法:205 表示意图的 be going to和 will+动词原形
牛津实用英语语法:201 will+动词原形表示做出决断时的意图
牛津实用英语语法:172一般现在时形式
牛津实用英语语法:208 第一人称will和shall
牛津实用英语语法:231 should/would think+that从句或so/not
牛津实用英语语法:191 现在完成进行时用法
牛津实用英语语法:168 通常不用于进行时的动词
牛津实用英语语法:236 it is/was+形容词+ that… should结构
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