12÷1.5+0.15×0.6＝（）。
A．8.09
B．18.09
C．80.9
D．180.9
参考答案：A
解析：
原式
I don't think Ken did such a stupid thing, ? [ ]
A. do I
B. did I
C. did he
D. does he
环境规划的主要任务
