题目

 如图所示，水平桌面上斜放着一个平面镜，桌面上有一个小球向右滚去。要使平面镜中小球的像沿竖直方向下落，则镜面与桌面间的夹角α应为                    （    ）  A. 30ºB. 45ºC. 60º  D. 90º  答案：B解析:略 2、Read the advertisements carefully. Then answer the following questions. A RESTAURANT MANAGER / WAITING STAFF The ideal applicant must have relevant（有关的） experiences gained in a high quality hotel. Please call Personnel on 071-722-7722, or send your CV to: Regents Park Hilton, Lodge Road, London REGENTS PARK HILTON B USE YOUR LANGUAGE AND EARN ?450-?1200P. W. We are one of the largest business publishers in Europe and have limited positions for intelligent people in our London advertisement sales office. Enquiries（询问着） from German, Spanish and Eastern European speakers especially welcome. Phone on 071-753-4300 C BABY SITTER WANTED For a 9-month-old-artistic /Prof household Noting Hill, 3 days per week Some hours Flexibility required Knowledge German / French 071-221-7572 I.                   D II.                 ROOMATE WANTED Own room near campus. Available December 1st. Rent $80 per month until March 1st. $129 there after. Call Luck for details. 800-7829. E HELP WANTED If you are available a few hours during the day, some evenings and occasional weekends to care for 2 school-age children, please call Mary Smith 800-1111, evenings and weekends 800-4646. F WAITRESS WANTED The biggest and busiest restaurant in London is seeking for new blood. If you have serving experience in a restaurant and looking for a change, then come and try! Apply in person 49. You can most probably read the advertisements ________ A. in a store window B. in a newspaper C. in a government magazine D. on a company notice-board 50. Annie is a both lively and creative German girl who is good at the language arts. She is likely to phone _______for a job. A. 071-722-772               B. 071-753-4300 C. 071-221-7572              D. 800-4646 51. Which of the following is needed for the baby sitter job? A. Relevant experiences.     B. Flexibility. C. Patience.                       D. Serving experience 52. If you are to be a waitress in the biggest and busiest restaurant in London,you will have to __________ A. telephone the restaurant         B. write a letter to the restaurant C. go to the restaurant yourself   D. send an email to the restaurant