据统计:1931年欧美在华投资中,有42.8%集中于上海,1937年上海则集中了欧美在华投资的79.2%,不久上海还一度成了欧美在华投资的唯一中心。导致欧美列强对上海投资变化的主要原因是
Since the exchange student was born in America, he simply has no idea life will be like in China.
(2015•东营)若yx=34,则x+yx的值为( )
下列同学中,正确行使公民权利的是( )