Question

4．Public service advertising is designed to inform the public on issues that are frequently considered to be in the general best interests of the community at large．Typically，it reflects a political viewpoint，philosophical theory，religious concept or humanitarian notion（觀念）．It is also commonly referred to as a public service announcement （PSA）or a community service announcement （CSA）．The ads are usually broadcast on radio or television，buy may also appear in newspapers or magazines．They are common in industrialized counties throughout the world．
PSAs are commonly aimed at changing public attitudes by raising consciousness about particular issues．Health，conservation and safety themes are popular in many PSAs．The public service advertising campaigns are often sponsored by trade associations，civic organizations，non-profit institutions or religious groups．
Most public service advertising involves joint efforts of the private and public sectors．Non-profit groups and government agencies commonly team up with private mass media，promotion and advertising firms to produce spots for radio，television and print media．Most commonly，the non-profit agency creates the message and an advertising firm develops the campaign，polishes it to meet industry standards and plans its distribution，all free of charge．Television and radio stations usually broadcast these ads at no charge，and magazines and newspapers customarily publish them for free as well．
In recent years，it has become commonplace for U．S．television stations to feature public service advertising spots immediately following a broadcast that has focused on an issue considered sensitive and of concern to many members of the general public．These PSA broadcasts generally offer addresses，websites and toll-free telephone numbers for information sources．Some of the topics focuse4d on in the PSAs have included child abuse，AIDS and civil rights．

29．What's the main purpose of PSAs？C
A．To sell more products through some special ways．
B．To change consumer's attitudes through media．
C．To improve people's awareness about special issues．
D．To make more famous stars known to the public．
30．How does the author like PSAs？A
A．He thinks it good to make PSAs．
B．He is against the idea of PSAs．
C．He is curious about the idea of PSAs．
D．He thinks PSAs are completely to make money．
31．What can we learn from the passage？C
A．Most of the PSAs are made by the government．
B．PSAs will make big profits for trade associations．
C．PSAs offer various topics in many different areas．
D．PSAs are mainly broadcast on television currently．

Answer 1

分析 短文主要對(duì)PSAs（公益廣告）進(jìn)行介紹，包括其運(yùn)轉(zhuǎn)和主題等內(nèi)容．

解答 29．C，細(xì)節(jié)理解題，根據(jù)句子PSAs are commonly aimed at changing public attitudes by raising consciousness about particular issues可知，PSA目的在于提到公眾對(duì)某些事情的意識(shí)，故答案為C．
30．A，推理判斷題，根據(jù)文章第一句Public service advertising is designed to inform the public on issues that are frequently considered to be in the general best interests of the community at large，公眾服務(wù)廣告目的用來(lái)告知大家最感興趣的一些事件，可以推測(cè)作者認(rèn)為PASs是好的，故答案為A．     
31．C，細(xì)節(jié)理解題，根據(jù)句子Health，conservation and safety themes are popular in many PSAs和Some of the topics focuse4d on in the PSAs have included child abuse，AIDS and civil rights．可知，PSAs提供不同領(lǐng)域的很多主題，故答案為C．

點(diǎn)評(píng) 解答任務(wù)型閱讀理解題，首先對(duì)原文材料迅速瀏覽，掌握全文的主旨大意．因?yàn)殚喿x理解題一般沒有標(biāo)題，所以，速讀全文，抓住中心主旨很有必要，在速讀的過程中，應(yīng)盡可能多地捕獲信息材料．其次，細(xì)讀題材，各個(gè)擊破．掌握全文的大意之后，細(xì)細(xì)閱讀每篇材料后的問題，弄清每題要求后，帶著問題，再回到原文中去尋找、捕獲有關(guān)信息．最后，要善于抓住每段的主題句，閱讀時(shí)，要有較強(qiáng)的針對(duì)性．對(duì)于捕獲到的信息，要做認(rèn)真分析，仔細(xì)推敲，理解透徹，只有這樣，針對(duì)題目要求，才能做到穩(wěn)、準(zhǔn)．