题目

下列哪种情况是利用紫外线特征工作的（） A . 电视机遥控器前端的发光二极管 B . B超 C . 步枪瞄准器上的夜视仪 D . 医院手术室里用于灭菌的消毒灯 答案：D 阅读理解 　　In every school there is“top”crowd that sets the pace, while the others follow their lead．Let’s, say the top crowd decides that it is smart to wear bright red sweaters．Pretty soon everybody is wearing bright red sweaters． 　　There is nothing wrong with that, except the fact on some people bright red sweater is mighty unbecoming． 　　The situation can even become dangerous, if the top crowd decides that it is smart to drink or to drive cars at seventy miles an hour．Then the people who follow the lead are endangering(危害)their lives．They are like sheep being led to the slaughter(屠杀)． 　　Now, chances are that you have come across situations like these more than once in your life．Chances are that one time or another you probably did something you knew to be wrong．You may have excused yourself by saying,“Gee, the crowd does it．”Well, let the crowd do it, but don’t do it yourself．Learn to say“No”． 　　Develop your own standards and your own judgement．If you know the crowd is planning something to which you disagree, have the courage to bow out(退出)gracefully．You’ll have the satisfaction of standing on your own two feet． (1) The best title for this selection is ________． [　　] A． Follow the Leader B． The“Top”Crowd C． On Being Yourself D． Rules for Teens (2) The main idea of this passage is that ________． [　　] A． in every school there is a“top”crowd that sets the pace B． it is mistake to follow the“top”crowd blindly C． people who follow the“top”crowd are endangering their lives D． at one time or another you probably did something you knew to be wrong (3) The author disapproves of wearing red sweaters if ________． [　　] A． the crowd is wearing them B． you can’t afford them C． you don’t look good in red D． your parents disapprove (4) The author urges the reader to ________． [　　] A． obey his or her parents B． follow the crowd C． take the advice of his or her elders D． be independent (5) People who slavishly(奴隶般的)follow the“top”crowd ________． [　　] A． sometimes do things against their better judgement B． lose popularity C． have no respect for their parents D． eventually become pace-setters in their own right