单选题 Which of the statements concerning children' s fare is true?

A、 Children under two are charged 10% of the normal fare under any circumstances.
B、 The second child under two accompanying the same adult is charged 50 % of the normal fare.
C、 A 12-year-old is charged 50% of the normal fare.
D、 Unaccompanied children are charged the normal fare.

【正确答案】 B

【答案解析】[命题目的] 此题考察对文章要点的归纳。
[解题要点] 答案在第四段第二句话。这里有2种情况儿童付正常票的50%，选项B是第一种情况，其他选项均与文章内容相悖。
[思路拓展] 此题可用排除法。