听力原文:M: A button's come off this shirt. W: We can get a needle and some thread at a department store. Q: Why do they want to go to a department store? (18)
【简答题】Is your schoolbag too heavy to carry? The e-schoolbag will help you. In fact, the e-schoolbag should perhaps be called an e-textbook. It is a small computer for students. Heavy schoolbags have been a ...