关于孝文帝改革的影响,下列说法中不正确的是[ ]
A.加速了北方各族的封建化进程
B.促进了北方的民族大融合
C.使北方的经济得到恢复和发展
D.促进了黄河流域的统一
答案:D
By the time Jack returned home from England, his son ________ from college.[ ]
A. graduated
B. has graduated
C. had been graduating
D. had graduated
下列省区全位于南方地区的是[ ]
A、山东省
B、湖北省
C、江苏省
D、四川省