题目

请在图中用笔画线代替导线连接电路。要求：两灯并联，开关S同时控制两盏灯泡。 答案：见解析 【解析】由题知，两灯并联，开关S同时控制两盏灯泡，所在开关应在干路上；图中电流从电源正极流出后，经过开关后应分成两支，分别通过两盏灯泡后再汇合回到电源负极，且电流应从电流表的正接线柱流进，负接线柱流出，故应将L1的右侧与L2的左侧相连，L2的右侧或电流表的左侧接电源负In the West, advertisements are the fuel that makes mass media work. Many TV stations, newspapers, magazines, radio stations are privately owned. The government does not give them money. So where does the money come from? From advertisements. Without advertisements, there would not be these private businesses. Have you ever asked yourself what advertising is? Through the years, people have given different answers to the question. For some time it was felt that advertising was a means of "keeping your name before the public" And some people thought that advertising was "truth well told" Now more and more people consider it in this way; Advertising is the paid, non-personal, and usually persuasive presentation of goods, services and ideas by some certain sponsors (发起人) through various media First, advertising is usually paid for. Various sponsors pay for the advertisements we see, read, and hear over the various media. Second, advertising is non-personal. It is not face-to-face communication. Although you may feel that a message in a certain advertisement is aimed directly at you, in reality, it is directed at large groups of people. Third, advertising is usually persuasive. Directly or indirectly it asks people to do something. All advertisements try to make people believe that the product, idea, or service advertised can benefit them. Fourth, the sponsors of the advertisement must show their names. From the advertisement, we can see if the sponsor is a company, or a single person. Fifth, advertising reaches us through old and modem mass media. Included in the old media are newspapers, magazines, radio, television, and films. Modem media include emails, matchbox covers, and boards on top of buildings. 9. The existence of the privately owned mass media depends on the support of ________. A. the government     B. their owners’ families       C. advertisements       D. the TV stations 10. The passage seems to say that different ideas of advertising are given due to ________. A. the change of time                       B. the subject of the advertisements C. people’s age difference                     D. people’s different opinions 11. Which of the following is considered modem mass media? A. Newspapers.       B. Emails.        C. Magazines.          D. Films. 12. According to the passage, which of the following statements about advertisements is NOT true? A. The sponsors are always mentioned.        B. Advertising must be honest and humorous. C. There is the description of things advertised.          D. Advertising is meant for large groups of people.