长江上游四川境内的钢铁工业基地是[ ]
A、重庆钢铁工业基地
B、马鞍山钢铁工业基地
C、武汉钢铁工业基地
D、攀枝花钢铁工业基地
答案：D
_____ crying sadly, he raised his head and let tears stream down his face on purpose. [ ]
A. To be seen
B. Seeing
C. To see
D. Having seen
下列IP地址中正确的是___________。
A．210.45.125.256
B．192.1.1.1
C．122.42.226.27.52
D．210.45.125
