题目

甲车以加速度由静止开始作匀加速直线运动，乙车落后在同一地点由静止出发，以加速度作加速直线运动，两车速度方向一致. 在乙车追上甲车之前，两车距离的最大值是A. 18m                       B. 24m                         C. 22m                         D. 28m  答案：B           16．A：Where are you going，Larry？B：（86）I'm going to Tom's party．A：Lucky you!I'd like to go to Tom's party，too．B：Well，I'm a little nervous．（87）I don't know what to wear．A：If I were you，I'd wear a shirt and a tie．B：And I don't have a present．What if everyone else brings a present？A：（88）If I were you．I'dtake a small present--a pen or something．Keep it in your pocket and if everyone has a present，you can give him yours．If not，you can keep it．B：（89）What if I don't know anyone？A：If you don't know anyone，you can talk to Tom．B：Thank you for your advice．A：（90）You are welcome．/That's OK．/That's all right．