[概括大意]The modem ideas concerning the nature of intelligence are bound to have some effect on our school system. In one respect a change is already occurring. With the move toward comprehensive education and the development of unstreamed classes， fewer children will be given the label “low IQ” which must inevitably condemn a child in his own， if not society‘s eyes. The idea that we can teach children to be intelligent in the same way that we can teach them reading or arithmetic is accepted by more and more people.
The main idea of this paragraph is __________.
A、Impact on School Education
B、A Changed View of Intelligence
C、Main Results of Recent Researches
D、Effect of Environment on Intelligence
答案解析：本题使用了同义词替换的选择技巧，段落中主要讲述的是智力本质的现代简洁必定会对学校教育产生影响(bound to have some effect on our school system.)，选项A中只是将名词effect 换为impact。
[完成句子]The importance of particular metals in the human diet has been realized within the past few decades， and the idea that geology might be related to health has been recognized for a number of elements such as iodine， zinc and selenium. For example， soils with low iodine contents produce crops， and animals deficient in iodine. A lack of iodine in the human diet leads to some serious diseases.
Some serious diseases is connected with deficiency of __________.
A、industrially polluted soils
B、the element of iodine
C、rock and soil chemistry
D、the persistence of heavy metals
答案解析：通过关键词Some serious diseases，可将题目定位于最后一句话：A lack of iodine in the human diet leads to some serious diseases. deficiency of和lack of表达同样的意思“缺乏、缺少”，因此根据这句话可以判断答案为B。