18．This is a dangerous world we live in．The number of murders goes up every year，people are dying of cancer，more people contract HIV，more teens are using drugs，etc．You know this because you've heard all the statistics on the news and in the paper．But do you really have an accurate idea what they mean？The numbers are going up，but how do they compare to the growth in population？Are more cases of these diseases being reported because of better testing techniques，or are the diseases more common？The fact is that without knowing the background statistics means very little．
This growing trend of reporting only part of the information is becoming dangerous．For example，several years ago a high school student reported the dangers of the chemical known as dihydrogen monoxide（一氧化二氢）．This chemical，found in most cancerous tumors，is often found in the blood of people drunk on alcohol，and causes complete physical and mental dependence for those who take the chemical even once．After reading his report，more than 75% of his Advanced Placement Chemistry class voted to forbid this dangerous chemical!Every one of the above statements is true，yet this chemical is necessary to all life on earth．The students made the mistake because they voted knowing only a few statements and statistics，rather than the chemical's full background．
The point of this article is that one should be aware of what is and is not being said．When one finds a new fact or number，one should try to consider other important information before forming an opinion with only half-truths．Always remember that the author is trying to convince you of his or her own view，and will leave out information that is different to his view．For example，look again at the statistics that suggest skiing is safe．Only 32people may die each year when skiing，while 897die from lightning strikes，but which is really the most dangerous？If you think about it，you realize far fewer people go skiing each year than the number of people who are in danger of a lightning strike．When you think about it，skiing is more dangerous than you might at first think when looking at statistic．If we teenagers are to be left in this world，we had better be able to think critically，and form our own views，rather than be easily persuaded by another's．To be warned is to be prepared．
（Note：Answer the questions or complete the statements in NO MORE THAN TEN WORDS）
78．What makes us concerned that the world is becoming more and more dangerous？All the statistics on the news and in the paper．
79．The example in the 2nd paragraph is used to prove that some reports areUnconvincing．
unless they include information from all sides．
80．In order to ensure their views are acceptable，some authors willleave out information that is different to his view．．
81．What's the author's suggestion for teenagers？To think critically，and form our own views．．
分析 本文论述了片面报道的危害性，例如有些片面数据表明谋杀案的数量在增加，这项数据引起人们的极大恐慌；一个学生发现一氧化二氢的危害，使得对一氧化二氢禁用，而实际这些数据都是片面的，但是这些报道却忽视了这一点，从而造成不必要的恐慌．所以人们在在对事物只有一知半解的时候不能发表不负责任的言论，同时要学会批判性的来看待别人的观点．
解答 答案：
78．All the statistics on the news and in the paper．
细节理解题 此处的问题是"是什么让我们担心这个世界正变得越来越危险？"；根据第一段可知，"You know this because you've heard all the statistics on the news and in the paper．"（因为你听到了新闻和报纸中的所有统计数据，所以你了解到了这个问题）中的"this"指的是"The number of murders goes up every year，people are dying of cancer，more people contract HIV，more teens are using drugs，etc"（谋杀案件的数量逐年上升，人们死于癌症，更多的人感染艾滋病毒，越来越多的青少年在服用毒品等）；故答案为：All the statistics on the news and in the paper．
79．Unconvincing．
主旨题 根据第二段中的第一句This growing trend of reporting only part of the information is becoming dangerous．可以知道这种只报道片面信息的趋势对社会是有危害的．以及最后一句The students made the mistake because they voted knowing only a few statements and statistics，rather than the chemical's full background
"可以知道这些学生是在只了解了片面的信息之后的出的结论，他们没有看到这种化学元素的全部作用．所以他们得出了错误的结论，因此这个例子就是为了证明报道片面信息是不可信的．
80．leave out information that is different to his view．
细节题．根据第三段中的第三句Always remember that the author is trying to convince you of his or her own view，and will leave out information that is different to his view（你一定要记住，作者为了让你信服他的观点，总是不提那些和他不一样的观点）可以的出答案．
81．To think critically，and form our own views．
细节题．根据第三段中的倒数第二句If we teenagers are to be left in this world，we had better be able to think critically，and form our own views，rather than be easily persuaded by another's．可以知道如果我们青少年将要生存在这个世界上，就要能够批判性的思考，形成自己的观点而不是很容易的就被别人说服．
点评 考查阅读表达．
对于事实细节题，剖析一下不难看出，事实细节的内容不会单独出现，它总会与前前后后的段落内容相呼应．考生只要抓住整体大纲，看懂主题，利用内容间的因果关系，通过时间空间的关系转换，并对细节进行深入的剖析了理解，确定主题，将零碎的细节组成一个有机整体，就能深刻理解材料的内容，从而轻松解决问题．
