Question

请英语高手帮忙解答，给出讲解，谢谢

1on the way to Shanghai they called___a few colleges and universities in Nanjing
A at B on C up D to
2waves generally result from wind___ on water
A acting b acts c to act d it acts

Answer 1

1 A call at 是拜访某地，而call on是拜访某人，是有区别的，此处是表示地点，所以用call at.
2 A 现在分词在此题作定语，修饰wind

Answer 2

1. A call at 拜访
2.A 现在分词做后置定语修饰wind

追问

第一题的call on 为什么不对，他也有拜访的意思呀

追答

call on sb 拜访某人 call at sp 拜访某地