题目内容：

下面文章中有五处需要添加首句。请从以下选项(A、B、C、D、E和F）中选出符合各段意思的首句。选项中有一项是多余选项。

Should We Keep Animals In Zoos?

Zoos are popular places in communities around the world. They're places where people can learn about wild animals by seeing them up close. Some people, though, believe zoos aren't good for animals. They think wild animals should only live in the wild.

1.

Wild animals have been kept in cages for thousands years. Over time, people began speaking out about the practice of keeping animals in zoos. The rise of animal rights movement and groups have led many to question whether or not zoos are right.

2.

Zoos provide care for animals that they wouldn't receive in the wild. Animals are fed a healthy diet in zoos. Also, zoos have veterinarians who provide medical care for hurt or sick animals that would often be left to die in the wild. In some cases, zoos help animals to live longer.

3.

Though many animals live longer in zoos, some mammals live longer in the wild. Elephants live near twice as long in the wild as they do in zoos. Scientists believe the causes for this include elephants in zoos becoming stressed and depressed when they are forced to live in small spaces.

4.

It may seem like a good thing that zoos set animals back into the wild, but there are often problems with this practice. Zoo animals don't learn hunting skills since they are fed by zookeepers. They also have no idea to stay away from predators, cars or hunters in the wild.

5.

How much do zoos actually teach people about animals? A 2014 study showed that only 1000 out of 3000 children who visited a zoo learned something new. Groups such as PETA believe the biggest thing children learnt at zoos is that it's fine to keep animals in cages instead of in the wild.

 

A. Unable to go back

B. Caring for animals

C. Animals in the world

D. Spiritual problems

E. Rise of animal rights

F. The wrong lessons