A.1 B.2 C.3 D.4
A.85% B.80% C.75% D.70%
A.岩浆岩 B.沉积岩 C.变质岩 D.火成岩
A.0.5 B.1 C.1.5 D.2
A.60 B.70 C.80 D.90