阅读下面短文，然后从每题所给的四个选项中，选出最佳选项.

　　On holidays my parents often take me to the zoo in our city because I like animals. I have a lot of toy animals in my room. In the zoo I can see tigers, elephants, monkeys, pandas, bears, dolphins, giraffes and many other animals. Some animals are very friendly, but some are not. Tigers, bears and some snakes are very dangerous. That is why they have to stay in cages. But I don't think it's good for animals to stay in cages. They should be free. The animals in cages can't be happy.

　　Tigers usually live in forests and mountains. They can run very fast. They catch and eat small animals like rabbits and deer, but now they live in small rooms. They have nothing to do every day. So they walk in the cages, and they want to get out. When they are tired, they sleep. I feel sorry for them.

　　I think the most interesting animal in the zoo is dolphin. I like watching them swim and jump. They swim fast and they jump very high. They can play with a ball. They can stand up and “walk”on water! They are very friendly to people. If you fall into the water and you can't swim, they may come up to help you.

(1) ________ are very dangerous animals.

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A．Tigers and monkeys

B．Bears and elephants

C．Bears and snakes

D．Giraffes and dolphins

(2)The writer thinks that animals should ________ .

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(3)Tigers eat ________ in the forests and mountains.

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(4)What is the writer's favorite animal?

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(5)What does the writer want to tell us?

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A．Don't get close to the dangerous animals.

B．Animals should live in the nature freely.

C．Animals are men's best friends.

D．We should love animals.