Choose the best topic sentence from the group below by writing A

Choose the best topic sentence from the group below by writing A, B, C or D. A. Mental symptoms of stress include anxiety, trouble sleeping and so on. B. Symptoms of stress can vary widely from one person to the next. C. Some people may have headaches or back pain when they are under stress. D. Mental symptoms of stress can be controlled through drug therapy. Answer :__________
【正确答案】:B
【题目解析】:段落的主题句对主题的限定主要是通过句中的关键词来表现的。关键词要尽量写得具体些。对“具体”的要求包括两个方面:一是要具体到能控制和限制段落的发展;二是要具体到能说明段落发展的方法。在考试中,我们主要使通过主题句的定义,主题句的位置,主题句中的必要要素和主题句与推展句的关系来判定哪一句是主题句,以及哪一句适合做主题句。而准确地把握关键词是清楚地表达段落主题、写好段落主题句的重要前提。本题中,最容易被误选的是A答案。但是,A答案中的and so on无法控制段落的发展,故而,比较而言,选择B。