题目

如图所示,安徽省某个城市安装一种“按钮式红绿灯”。当路上车辆不多时,行人通过触摸按钮,使正对车辆的红灯亮起，行人安全优先通过。按钮相当于电路中的____，(选填“电源”“用 电 器”或“开关”)。 答案：【答案】开关【解析】行人通过触摸按钮，使正对车辆的红灯亮起，故按钮是电路中的开关。Name: Off the Beaten Path Cover price: $30.00 Our price: $l9.80 The best-selling Reader’s Digest travel book has 40% new content including over 200 new sites, over 200 new full-color photographs, and all-new, up-to-date maps. It spotlights over l, 000 of the United States’ most overlooked must-see destinations. Name: Container Gardens by Number Cover price: $l5.95 Our price: $9.49 A unique book contains 50 easy-to-follow container designs. Each design provides a simple numbered planting plan that shows exactly how to create each display, with an instruction of the finished planter and in-depth (深入的) plant information. The plans are easy to follow and for any type of living space or garden. Name: Best Weekend Projects Cover price: $l7.95 Our price: $l3.96 Choose from 80 unique ideas to create an extraordinary living space. The projects are practical, as well as attractive, and will improve your home and yard and can be made in a weekend. These 80 well-designed projects are presented in a clear, easy-to-follow style that addresses readers in an accessible, user-friendly tone. Name: l80l Home Remedies Cover price: $40.00 Our price: $29.96 Plenty of health complaints can be handled at home. Each and every remedy will be tested by a doctor to make sure it is safe and sound. Dozens of conditions are covered, from headaches, sunburn, bad breath, and blisters (水泡) to allergies (过敏), and hiccups (打嗝). 1.You can most probably read the passage in a ________.   A. newspaper      B. travel guide   C. reference book D. textbook 2. Which of the following could help you to improve your home environment?   A. Off the Beaten Path & l80l Home Remedies.                    B. Container Gardens by Number & Best Weekend Projects.   C. l80l Home Remedies & Container Gardens by Number.            D. Best Weekend Projects & Off the Beaten Path. 3.What’s the purpose of the passage?   A. To share his opinion about the books with readers.   B. To advise readers to read more in spare time.   C. To share the pleasure of reading with readers.   D. To advise readers to buy their books.