答案与解析：
1.文章主题分析：intelligence： a changed view
(第1段) Intelligence was believed to be a fixed entity， some faculty of the mind that we all …
(第2段)Today， we are beginning to think differently…。
(第3段)There are evidences that support the view that we have to distinguish between genetic intelligence and observed intelligence.
因此判断文章主题涉及到人们(随着时间变化？)对智力的不同看法。
2. 被选项分析：
A. Main results of recent researches
B. Popular doubt about the New View
C. Effect of environment on intelligence
D. Intelligence and Achievement
E. Impact on school education
F A changed View of Intelligence
划线结构是被选项中的核心结构，也是可以作为答案线索的结构。
A. Main results of recent researches
B. Popular doubt about the New View
C. Effect of environment on intelligence
D. Intelligence and Achievement
E. Impact on school education
F A changed View of Intelligence
1. paragraph 2___
Today， we are beginning to think differently. …There is considerable evidence now which shows the great influence of environment both on achievement and intelligence. Children with poor home backgrounds not only do less well in their school work and intelligence tests but their performance tends to deteriorate gradually compared with their more fortunate classmates.
1. C. 分析：在段落中第2句发现了“influence of environment both on achievement and intelligence”，该结构含义与C的内容一致(环境对智力的影响)，而且在段落的后面部分发现了用“穷孩子和富人家的孩子进行比较”的例子，因此肯定D是答案。
A. Main results of recent researches
B. Popular doubt about the New View
D. Intelligence and Achievement
E. Impact on school education
F A changed View of Intelligence
2. paragraph 4 ___
The two major findings have emerged from these researches. (与A呼应)Firstly， the greater part of the development of observed intelligence occurs in the earliest years of life. It is estimated…。 Secondly， the most important factors in the environment are language and psychological aspects of the parent-child relationship…
2. A.分析：抓住段落结构：“观点总结句 分层说明 (The two major findings have emerged from these researches(从这些研究中形成了两大主要研究结果)。 Firstly，。。 Secondly， 。。)”判断A是答案。
B. Popular doubt about the New View
D. Intelligence and Achievement
E. Impact on school education
F A changed View of Intelligence
3. paragraph 5 ___
These research findings have led to a revision in our understanding of the nature of intelligence.(观点句，在内容上与F呼应) Instead of it being some largely inherited fixed power of the mind， we now see it as a set of developed skills with which a person copes with any environment. …
3. F. 分析：段首句(观点句)的句意与F一致，而且随后的句子中也提到了“we now see it as a set of developed skills.。(我们现在把它看作是一套后天习得的技能)”—反应“变化了的观点”，所以判断F是答案。
B. Popular doubt about the New View
D. Intelligence and Achievement
E. Impact on school education