單項選擇題
A.1 B.2 C.3 D.4
A.99% B.99.50% C.98.50% D.99.60%
A.98% B.99% C.99.50% D.99.95%
A.80% B.85% C.95% D.100%
A.70% B.80% C.90% D.85%
A.0.504 B.0.604 C.0.704
A.0.5 B.1 C.1.5 D.2
A.1/2 B.1/3 C.1/4 D.零
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