A.①②④,③⑤⑥ B.①②⑤,③④⑥ C.①③⑤,②④⑥ D.①④⑤,②③⑥
A.3.5 B.2 C.7 D.8.5
A.2860 B.3 146 C.3432 D.3575
A.22.55 B.24.05 C.25.55 D.27.05