题目

John wished ___. A. he will study more                  B. he had studied more   C. he studies                       D. he won’t have studied more   答案：B某中学篮球队13名队员的年龄情况如下：年龄（单位：岁）15161718人数3451则这个队队员年龄的中位数是（ ）A．15.5B．16C．16.5D．17