（1）m1、m2、m3以同一速度前进时的速度。（2）物体在拖车平板上移动的距离。（g取10m/s2）
（1）1m/s（2）0.33m
填空题
1. In general, girls are much____ (hardworking) than boys.
2. This village is____(quiet) during the day than at night.
3. It's one of____ (meaningful) activities in this term.
4. My fingers are ____long ,but Tom's are ____longer than mine.( very ,much)
5. He ate (much too ,too much) cold food yesterday evening.
下列哪项是尿石症的临床特点（）
A.尿后余沥不尽
B.排尿不适
C.疼痛、尿血
D.小便不畅
E.腰骶坠胀
