單項選擇題
A.±11 B.±10 C.±8 D.±5
A.9 B.9.5 C.10 D.12
A.8±1.5 B.6±1.5 C.4±1.5 D.2±0.5
A.4±0.5 B.3±0.5 C.2±O.5 D.2±0.5
A.2 B.1 C.0.5 D.0.1
A.4.5 B.3.5 C.2.5 D.1.5
A.30 B.20 C.15 D.10
A.1875 B.2440 C.2150 D.1725
A.1-2 B.1.5-2 C.2 D.3
A.1 B.2 C.3 D.5
A.1/2 B.1/3 C.1/4 D.1/5