A.12歲 B.10歲 C.5歲 D.1歲
A.8μg/ml;1μg/ml B.10μg/ml;2μg/ml C.12μg/ml;2μg/ml D.15μg/ml;4μg/ml
A.5:1 B.4:1 C.3:1 D.2:1