A:美苏冷战的重点从军事领域转向经济领域
B:美国霸主地位动摇,急需打开苏联市场
C:苏联轻工业发达,不需要进口这些器具
D:经济文化交流没有改变两国意识形态的对立
有关我国领土和行政区划的叙述,正确的是( )
This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?