题目内容
不利用一般的检索系统，而是利用文献后面所列的参考文献，逐一追查原文（被引用文献），然后再从这些原文后所列的参考文献目录逐一扩大文献信息范围．一环扣一环地追查下去的文献检索方法是（）。
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老子“无为而治”的思想要求人们做到（）。
二、语句表达(21—25题)：从词语运用、语法结构等方面对给出的语句作出判断。请开始答题： 下列各句中加点词语使用正确的一项是()。
根据以下内容回答题：
Celebrities lead very stressful lives，for no matter how fascinating or powerful they are，they have too little privacy，too much pressure，and no safety.
For one thing，celebrities don’t have the privacy an ordinary person has．The most personal details of their lives are printed on the front pages of the National Enquirer and the Globe so that bored supermarket shoppers can read about“Leonardo DiCaprio’s Awful Secret”or“The Heartbreak behind Winona Ryder's Smile”．Even a celebrity’s family is made public．A teen-age son’s arrest for using drug or a wife’s drinking problem becomes the subject of headlines．Photographers chase celebrities at their homes，in restaurants，and on the street，hoping to get a picture of Halle Berry in curlers or Jim Carrey drinking beer．When celebrities try to do the things that normal people do，like eat out or attend a football game，they run the risk of being interrupted by thoughtless photographers．
Celebrities must also cope with the constant pressure of having to look great and act fight．Their physical appearance is always under observation．Famous women，especially，suffer from public attention，inviting remarks like“She really looks old”or“Boy，has she put on weight．”Embarrassing pictures of celebrities are sold at hi|gh prices，which increases the pres-sure on celebrities to look good at all times．Famous people are also under pressure to act“calm and collected under any circumstances．Because they are constantly observed，they have no freedom to be angry or to do something just a little crazy．
Most important，celebrities must deal with the stress of being in constant danger．The friendly behaviors such as kisses of enthusiastic fans can quickly turn into uncontrolled attacks on a celebrity’s hair，clothes，and car．Most people agree that photographers brar some respon-sibility for the death of one of the leading celebrities of the 1990s--Princess Diana．Whether or not their pursuit caused the accident that took her life．it's clear she was chased by reporters like an escaped prisoner chased by police dogs．And celebrities can even fall victim to deliber-ately deadly attacks．The attempts to kill Ronald Reagan and the murder of John Lennon came about because two unbalanced people could not get these world·famous figures off their minds．
As a result，famous people must live with the fact that they are always fair game--and never out of season．
Leonardo DiCaprio and Winona Ryder are probably names of __________． 查看材料
教师按一定的教学要求向学牛提出问题，要求学生回答，并通过问答的形式来引导学生获取或巩固知识的方法是()。
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