题目

I _______think Jenny ______a ping-pong bat. A . doesn't; have B . don't; have C . doesn't; has D . don't; has 答案：D在北京和杭州之间对开一对特快列车T31和T32，下表中所列为这两列车的时刻表．请回答下列问题：（1）T31和T32列车全程运行的时间1515h4040min．（2）除去停站时间，列车运行的平均速度是109109km/h．