题目内容：

    Dogs are our friends. 1.They can protect, even save us. They can also search for something, look after sheep, be with us and so on. There are many kinds of dogs. 2.

The working dogs can be divided into guide(引导)dogs, police dogs, hunting(打猎)dogs, sled dogs, ect.3. They can help blind people walk on the streets, take buses, buy things and do other things.

Police dogs have sharper of hearing and smelling than humans.4. Hunting dogs can help people who like hunting look for and catch the preys(猎物).

Toy dogs may be cute or beautiful. 5.

Today, more people like to regard dogs as their friends. They are their lovely friends forever

根据材料内容,从下面五个选项中选出能填入文中空缺处的最佳选项,使文章意思通顺、内容完整。

 

A. They can be divided into working dogs and -toy dogs according(根据)to different purposes

B. Rich or lonely people love to turn to toy dogs for comfort or happiness

C. They can do a lot of work for us

D. Guide dogs are trained for blind people

E. They often help police search for drugs(毒品)or bad persons.