A.12%~14% B.10%~12% C.60%~70% D.1%~2% E.20%~25%

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问题 A.12%~14%
B.10%~12%
C.60%~70%
D.1%~2%
E.20%~25%

选项 A、 
B、 
C、 
D、 
E、 

答案B

解析
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