A.5倍 B.4倍 C.3倍 D.2倍
A.0.1% B.0.2% C.0.5% D.0.6%
A.可以 B.不准 C.不得
A.6 B.5.4 C.3.24 D.2.6
A.35 B.45 C.55 D.65