因此，要做好这部分试题考生首先必须大体理解篇章的主要内容、逻辑关系，从而判断出作者的意图及归纳或演绎的思路；另外，考生在答题之前，还要对文章的文体有所了解，这有利于考生根据不同的文体对不同的或相近的选项做出正确的选择。如文学材料、科普文章、新闻报道等由于文体上的不同，它们在用词和句子结构上都有所不同。请看下面例子： Vitamins are organic compounds necessary in small amounts in the diet for the normal growth and maintenance of life of animals, including man. They do not provide energy, ___1do they construct or build any part of the body. They are needed for ___2foods into energy and body maint enance. There are thirteen or more of them, and if ___3 is missing, a deficiency disease becomes ___4.
1. A. either B. so C. nor D. never 2. A. shifting B. transferring C. altering D. transforming 3. A. any B. some C. anything D. something 4. A. serious B. apparent C. severe D. fatal
