兼跨A和B所在地势阶梯，有长江、黄河两大河流流经，且五种基本地形类型齐全的省级行政区是（  ）

唐朝时，扬州极为繁盛，当时有“扬一益二”之说。促使扬州繁盛的最直接的因素是（    ）

选词填空
                                                             know,  later,  again, have,  live,  one,  meet,  the, do, same
   One day the famous scientist Albert Einstein ____  an old friend of his in the street in New York. “ Mr Einstein,” said ____  friend, “ you need to ____  a new coat. “It ____ matter.” Answered Einstein. “ Nobody ____  me here in New York.”
   Several years ____ , they met in New York ____ . Einstein had become a world-famous physicist by then, but he was still wearing the ____  old coat. Once more his friend tried to persuade him to buy a new____ . “There’s no need now,” said Einstein. “ I have ____  here for a long time. Everybody here knows me.”

图所示，一木块立在表面粗糙的小车上，并随小车一起向左作匀速直线运动，当小车遇到障碍物而突然停止时，车上木块将（   ）