题目

Early in the morning, I was taken in a nylon bag into a truck. I felt horrible as well as    36  . What would she do with me? She was almost mad after the   37   of her husband.A few minutes later, I heard the truck   38   its engine and move fast. I kept making sounds to show my protest, but failed to make any   39  . Finally she put me down in a   40   place. Maybe she didn’t want me to die from lack of air; she untied the bag.I   41   out and looked up, only to see many strange faces and fingers pointing at me.It turned out that my owner meant to   42   me. I sa一河宽600米，水流速度为3m/s，小船在静水中的速度为5m/s．（已知sin37°=0.6，cos37°=0.8）求：（1）小船以最短的时间渡河，渡河时间为多少？（2）小船以最短的航程渡河，船头应指向何处？