第20题: [单项选择]What is the main idea of this passage A. There are three different kinds of loneliness. B. Chronic loneliness is the most severe kind. C. Researchers want to cure loneliness. D. There is some difference between being alone and being lonely. 参考答案:A 答案解析:主旨大意题。第一段最后一句指出，研究人员确认孤独有三种症状，接下来分别论述其特征。
第34题: [单项选择]He will surely finish the job on time ______ he's left to do it in his own way. A. in flint B. in case C. as far as D. so long as 参考答案:D 答案解析:so(as)long as意为“假如，只要”，可以引导条件状语从句，相当于provided(providing)that，only if，例如：I will lend you the dictiona
