研究生化学工艺专业英语下册完型与翻译研究生化学工艺专业英语下册完型与翻译.doc

完型部分及译文： UNIT 1 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 John. When the twins were three months old, their parents died, and they were placed in separate foster homes. Peter was reared by parents of low intelligence in an isolated community with poor educational opportunities. John, however, was educated in the home of well-to-do parents who had been to college. This environmental difference continued until the twins were in their late teens, when they were given tests to measure their intelligence. Johns I.Q. was 125, twenty-five points higher than the average and fully forty points higher than his identical brother. 有两个因素决定一个人的智力。首先是他出生时带的大脑排序。人类的大脑彼此之间有很大不同，有的有比别人多的能力。但不管他出生时有多好的大脑，个人将有底下的智力，除非他有学习的机会。因此第二个因素是在他长大的环境中发生了什么。如果一个人在环境方面有障碍，很可能他的大脑将无法发展，他将永远不会他能够达到的智力水平。同卵双胞胎彼得和约翰的历史可以环境对于确定一个人的智力的重要性。当这对双胞胎三个月大，他们的父母去世了，他们被安置在不同的寄养家庭。彼得被饲养在一个孤立的社区并且教育机会少，低智商的父母家中。然而约翰，在生活富裕、上过大学的父母家中接受教育。这种环境差异继续到这对双胞胎十几岁时，当测试他们的智力时。约翰的I.Q.是125，高于平均二十五点，比他的兄弟高出整整四十分。 UNIT 2 Recent studies of the human brain have resulted in some interesting discoveries. Scientists believe that a way to improve the power of the brain may soon be possible. Scientists have discovered that the brain can make its own drugs. The brain contains a protein substance which can act directly on the brai