下面是一篇关于Popular Culture的SAT阅读练习题,后面有相关的题目和答案解析。SAT阅读考试中的文章阅读一般都是考试的难点,需要大家经过一定时间的练习才能掌握。下面大家就一起来做一下这些题目吧。
Questions 13 are based on the following passage.
The following selection is about the invention of the compact disc, and explains how it works.
Compact discs , which may be found in over 25 million American homes, not to mention backpacks and automobiles, first entered popular culture in the 1980s. But their history goes back to the 1960s, when an inventor named James Russell decided to create an alternative to his scratched and warped phonograph recordsa system that could record, store, and replay music without ever wearing out.
The result was the compact disc . Made from 1.2 mm of polycarbonate plastic, the disc is coated with a much thinner aluminum layer that is then protected with a film of lacquer. The lacquer layer can be printed with a label. CDs are typically 120 mm in diameter, and can store about 74 minutes of music. There are also discs that can store 80, 90, 99, and 100 minutes of music, but they are not as compatible with various stereos and computers as the 74minute size.
The information on a standard CD is contained on the polycarbonate layer, as a single spiral track of pits, starting at the inside of the disk and circling its way to the outside. This information is read by shining light from a 780 nm wavelength semiconductor laser through the bottom of the polycarbonate layer. The light from the laser follows the spiral track of pits, and is then reflected off either the pit or the aluminum layer. Because the CD is read through the bottom of the disc, each pit looks like a bump to the laser.
Information is read as the laser moves over the bumps and the areas that have no bumps, also known as land . The changes in reflectivity are interpreted by a part of the compact disc player known as the detector. It is the job of the detector to convert the information collected by the laser into the music that was originally recorded onto the disc. This invention brought 22 patents to James Russell, who today says he working on an even better system for recording and playing back music.
1. According to the passage, why did James Russell invent the CD?
a. He was tired of turning over his records to hear both sides.
b. He wanted to record more music on a new format.
c. He wanted a purer, more durable sound than he could get from vinyl records.
d. He was interested in getting patents.
e. He wanted to work with lasers.
2. What would happen if the detector on a CD player malfunctioned?
a. The spiral track would not be read properly.
b. The pits and land would look like one unit.
c. The changes in reflectivity would be absorbed back into the laser.
d. The music would play backwards.
e. The information read by the laser would not be converted into music.
3. Paragraph 3, lines 1421, explains all of the following EXCEPT
a. how the information on a CD is read.
b. why semiconductor lasers were invented.
c. where information is stored on a CD.
d. what pits and bumps are.
e. the purpose of the aluminum layer of a CD.
Answers
1. c. The answer may be found in lines 4 and 5, which state that Russell wanted an alternative to his scratched and warped phonograph records. You may infer that the problem with such records was their poor sound quality.
2. e. Lines 2627 state that the detectors function is to convert data collected by the laser into music.
3. b. While the paragraph explains the function of semiconductor lasers in reading the information on CDs, it does not say anything about why they were invented.
以上就是这道SAT阅读练习题的全部内容,题目不多,只有三道,大家在做这篇SAT阅读练习题的时候,一定要记得,重点是了解SAT阅读文章的出题风格和答案的特点,从中找到规律,这样大家的SAT阅读练习题做题效率就会得到提高。
上一篇: SAT阅读长难句分析两句
下一篇: SAT阅读文章特点分析
炫酷高科技产品将亮相第三届世界互联网大会
国际英语资讯:Japanese PM admits TPP in serious trouble, says TPP leaders to hold meeting in Peru
《奇异博士》的16个彩蛋与桥段你一定要看懂
体坛英语资讯:Liverpool boss Klopp hints at Gerrards Anfield return
英语交流中作答的方式
Looking for the perfect partner 寻找理想的伴侣
国际英语资讯:Egypt optimistic about economy after IMF loan approval: PM
暖心小说《小王子》第23章
台湾街头举行数万人同性恋大游行
Cinema for the homeless and poetry in a box 流浪者的电影院,匣子里的诗
国际英语资讯:Iraqi forces continue anti-IS operation near Mosul
国内英语资讯:Chinese FM meets Turkish president, PM on cooperation
印度废除500卢比和1000卢比纸币
国内英语资讯:Time for Peru and China to take economic relations to next level, says Peruvian expert
体坛英语资讯:Messi falls ill during flight with Argentina national team
国际英语资讯:Chinas Huawei asks for a better connected world at ITU Telecom World 2016
国内英语资讯:Delegation pays homage at Sun Yat-sens tomb
国内英语资讯:Chinese premier congratulates Kyrgyz PM on new term in office
国际英语资讯:Worlds most obese man to undergo weight-loss treatment in Mexico
国际英语资讯:Obama administration gives up on enacting Pacific trade deal
国内英语资讯:Chinese president expects U.S. student delegation to act as ambassadors for friendship
Smoking causes DNA changes in our body 吸烟会导致人体内基因变异
5种促进结肠健康的食物
企鹅与情敌夺妻之战走红网络
国际英语资讯:Iraqi forces kill at least 57 militants in IS stronghold in Mosul
国内英语资讯:China plays important role in consolidating South-South cooperation: COP22 president
除霾神器“雾炮车”亮相北京街头
国内英语资讯:Video of Chinas Wonders broadcast at NYCs Times Square
哪国人英语最烂?我被结果惊呆了…
国际英语资讯:Spotlight: A year on, France honors victims of Paris attacks amid persistent high terror risk