【題組】41. What did Dr. Jason decide to do to help the students? (A) To choose cheaper textbooks. (B) T
【題組】42. How much does a public speaking book usually cost? (A) About 7 dollars. (B) About 30 dollars
【題組】46. What do we know about people sleeping in the space shuttle? (A)They sleep while listening to
You have probably seen ads (广告)in newspapers or on TV for mail-order shopping. Perhaps you have been