Shanghai changes a lot in transportation(交通).

    In the past, there were few cars. Now there are many kinds of cars. There were not any bridges above the Huangpu River. Now there are some bridges on it. There were no tunnels(隧道)under it.

    There were no undergrounds. Now there are many undergrounds. There were no light rails(轻轨)and maglevs(磁悬浮). Now there are some lights and maglevs.

    The changes make our lives more convenient(方便). I like the changes.

— Must I return the book this morning?

— No, you ______. But you ______ return it before supper.

①1861年改革 ②1917年俄国二月革命 ③俄国十月革命④实行五年计划

中欧班列是指往返于中国和欧洲之间的铁路货运列车。2017年5月13日，本年度第1000列中欧班列满载货物从浙江义乌西站驶向欧洲西班牙。读图，完成以下问题。