题目

据学者统计，在1949—1956年期间《人民日报》曾出现少量的招聘、招工广告，但1956年后这类广告基本消失。这一变化反映了当时我国（ ） A . 工业化成就突出 B . 生产关系的变革 C . 城市化进程缓慢 D . 生活水平的提高 答案：BThe largest television network in America is not ABC, CBS, or Fox．Nor is it one of the cable net—works such as CNN, which carries only news and news stories．It is not ESPN, the all-sports cable net-work, or even MTV, which is famous for its music videos．Rather it is PBS, Public Broadcasting System, a non-profit public broadcasting TV service．PBS has 349 member television stations in the U．S．and some member stations by cable in Canada．     PBS only attracts a minority of all TV viewers, about 2 percent．The industry leader, NBC, however, attracts 11 percent of viewers．But the growth of public television in the past two decades has been dramatic．This is especially noteworthy when one considers that public television stations must often survive on very limited budgets, on viewers’ donations, and on private foundations and some governmental funding．     The level of quality of PBS programs, whether in national and international news, entertainment, or education, is excellent．Almost a whole generation of children throughout the world is familiar with Sesame Street and the characters of The Muppet Show．PBS is especially well known for the quality of its many educational TV programs．Over 95 percent of all public television stations have tele-courses．These courses are accepted and supported by more than 1,800 colleges and universities throughout the US．Each year, over a quarter of a million students take courses this way． 1．According to this article, PBS received part of its funding from．_______．     A．private organizations                                   B．public schools C．advertising agencies                                    D．other television stations 2．What is PBS most famous for?     A．Cable services．                                         B．Generous donations． C．Educational programs．                              D．Live news broadcasts． 3．Which of the following is true about public television stations?     A．The majority of their viewers are minority people．     B．Ninety—five percent of their programs are tele—courses．     C．They are shrinking in number because they make no profits．     D．Their courses are accepted by many universities in America． 4．Which of the following has the highest percentage of viewers? A．ABC                B．PBS                 C．NBC                D．Fox