单项选择题
A. 1,200,000 B. 1,400,000 C. 12,000,000 D. 14,000,000 E. 20,000,000
A. Ⅰ only B. Ⅱ only C. Ⅰ and Ⅲ only D. Ⅱ and Ⅲ only E. Ⅰ,Ⅱ,and Ⅲ
A. 1.2 B. 1.6 C. 2.0 D. 2.4 E. 2.8