几道中学英语问题

几道中学英语问题
其实大概都是几个考点：
1.Hatred and misunderstanding between communities_____________ which we can no longer afford.
A are lazy and primitive feelings
B is lazy and primitive feeling
我选的是B.我不太明白.hatred和misunderstanding都是抽象的情感,用and连在一起要用复数吗?
2.If you don't know the way to the hospital,you may ask _____.
A a police B a policeman
是不是表示警察的一个或几个（a/one/two等）时要用policeman,那表示一个警察能用a police
3.I was looking through the evening paper when______ interested me.
A important information B the important information
我选的是B
4.masses of 后面是不是指能加复数可数名词?
a large amount of 后面是不是指只能加不可数名词?
5.The Yellow River is longer than _____ in Japan.
答案为the other rivers.
我只知道可以填any river,答案那种用法我不是很理解
5.我觉得我可以确定不是any other river.
黄河又不在日本。
3.我认为如果不加特指表泛指的话它至少该加些什么，比如a piece of 等等，不然我就觉得B更好。