题目

如图所示，小明利用一块玻璃板、白纸、刻度尺、蜡烛等器材，探究平面镜成像特点实验。回答下列问题： （1） 用玻璃板代替平面镜是为了 （2） 在图中画出人眼看到蜡烛上A点的光路图 （3） 实验过程中，眼睛通过玻璃板可能会观察到两个像，原因是 （4） 将一光屏放置在像的位置，说明平面镜成虚像。3、Hotel Reservations Welcome to the Kampala Beach Hotel Reservations（预定）System. You can reserve a room or package one of three ways: (a) online, (b) by phone, and(c)by email. Did you know? You can take advantage of special savings by booking direct with us online. A．Online Reservations        Enter your travel dates and the number of guests below to book your room online now. Click here to check on an existing online reservation. If you are searching for a specific package, please make sure your check-in and check-out dates allowing for the minimum number of nights in the package. You may make reservations for a maximum of 4 guests per room. For requests of 10 rooms or more, please refer to Group Accommodations. B．Reservations By Phone If you prefer to reserve by phone, please call: Toll Free from the USA, Canada, and Hawaii: +1-800-262-8450 Worldwide Direct: +1-808-661-0011 Hours (Hawaii Standard Time): Monday to Friday: 6 a.m. to 6 p.m. Saturday: 7 a.m. to 5 p.m. Sunday: 7 a.m. to 4 p.m. C. Reservations By E-mail If you prefer to submit（提交） an e-mail reservations request, click here. Submitting an e-mail request does not guarantee a reservation. For immediate confirmation and booking, please use online reservations engine above. 49. What is the purpose of writing the passage? A．To attract more tourists to the hotel. B．To introduce a new hotel. C．To show the importance of science. D．To make the trip for tourists easier. 50. If you want an immediate booking, you’d better use“            ”. A．Online Reservations          B．Reservations By Phone C．Reservations By E-mail     D．Did you know? 51. From the passage we may infer the hotel is in __________ .           A．Canada 　                B．mainland America C．French 　                 D．Hawaii 52. If you want to book a package you have to __________ .            . A．submit an e-mail reservations request B．make sure of your check-in and check-out dates C．refer to Group Accommodations D．wait for further notice