()时代,中国东南沿海的渔民已使用桨出海渔猎。
参考答案:新石器时代
You T-shirt is so cool. Could you tell me ?
A.where you buy it B.where you bought it C.where did you buy it
进一步检查首选
A.B超B.X线气钡双重造影C.CTD.PICE.ERCP