A-A+
A．10 yuan for the first 30 words.B．10 yuan for
问题详情
A．10 yuan for the first 30 words.
B．10 yuan for the first 20 words.
C．50 fen for the first 30 words.
D．50 fen for the first 20 words.
参考答案
正确答案：A
解析：根据…it was 10 yuan for the first 30 words and 50 fen for each word added. 可知, 前30字收费10元, 以后每加一字50分, 故选A。
