教育对个体的影响，不仅具有即时价值，而且具有______价值。
参考答案：延时
甲、乙两人都从A地到B地，乙步行每小时走4km，先走1.5h，甲骑自行车走了50min后，两人同时到达B地，甲的速度是多少？
____ she couldn’t understand was _____ fewer and fewer students showed interests in her lessons.
A．What; why
B．That; what
C．What; because
D．Why; that
