1.1, 2.2, 4.3, 7.4, 11.5, ()A. 16.6 B. 15.6 C. 15.5 D. 16.5 1.1, 2.2, 4.3, 7.4, 11.5, ()A. 16.6 B. 15.6 C. 15.5 D. 16.5 参考答案 查看答案