阅读理解：Students in our school have a colorful school life. We have School Activity Week every year, On thewall of the teaching building are the posters from Grade 7, Grade 8 and Grade 9. Let’s go and have a look! Be a Good Reader! Time: 13:30-16:30, Apr. 10th Place: Reading Hall ★Improve your reading skills and get new ways of reading. ★Learn more about nature. ★Increase your knowledge and make new friends. For Free! Grade Seven Invite Your Father to Join Us! Time: 09:00-12:00, Apr. 12th Place: Meeting Hall ★Join in the one-month “stop smoking” challenge ★Know about how to give up smoking ★Ask your father to join us! For Health! Grade Eight Raise Money for Children! Time: 14:00-17:00, Apr. 14th Place: School Playground ★Save 30% on everything. ★Come and buy pens, dictionary and other school things. ★Look forward to your coming. For Children! Grade Nine 52. We can see the posters on the ________. A. desk B. blackboard C. wall D. playground 53. The “stop smoking” challenge lasts ________. A. one week B. one month C. on term D. one year 54. When we take part in the activity on Apr. 10th, we can do the following activities expect _______. A. buying school things B. getting new ways of reading C. improving reading skills D. learning more about nature 55. If a pen in the shop is ten yuan, we can pay only ______ yuan for it in our school on Apr. 14th. A. eight B. seven C. three D. two