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[单选题]
某次数学竞赛共20道题,评分标准是:每做对一题得5分,每做错或不做一题扣1分。小华参加了这次竞赛,得了64分。问:小华做对()道题
A.6
B.12
C.14
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
C、14
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.6
B.12
C.14
C、14
A.10x-5(20-x)≥90
B.10x-5(20-x)>90
C.10x-(20-x)≥90
D.10x-(20-x)>90
A.6
B.8
C.10
D.12
A.1/5
B.3/10
C.2/5
D.1/2
A.7/8
B.6/7
C.3/5
D.1/3
A.-20
B.98
C.8
D.80
A.陈佳=1;赵义=2;王冰=1
B.陈佳=2;赵义=1;王冰=1
C.陈佳=1;赵义=3;王冰=0
D.陈佳=2;赵义=2;王冰=0