我是拼音小能手

    I'm Fang Ming. 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, giraffes and many other animals. Some animals are very friendly, but some are not. Tigers, bears and lions 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.

绿洲与荒漠的交错带生态环境脆弱，在其附近的绿洲区过量开采地下水会使交错带生态环境退化。形成“生态裂谷”。下图为“生态裂谷”分布示意图。完成下列问题。