单项选择题
A.60%～66% B.70%～76% C.77%～83% D.84%～90% E.90%以上
A.20 B.30 C.50 D.80 E.100
A.8 B.10 C.12 D.14 E.16
A.693～707 B.679—721 C.665～735 D.651～749 E.630～770
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