请选择DCBA'k,K+w,U)k'k(e8V/Q1a8@The population of China is about 1300 000 000.:x'`1B9m;H6~0y/S2g*r
A. 面积:x'`1B9m;H6~0y/S2g*r
B. 高度:x'`1B9m;H6~0y/S2g*r
C. 长度:x'`1B9m;H6~0y/S2g*r
D. 人口:x'`1B9m;H6~0y/S2g*r