1 . The Sydney Opera House (悉尼歌剧院) is always a relaxing place for people around the world.

But there is a problem. There are many seagulls (海鸥) around it. They are so noisy and not friendly to people. They also take people’s food away. Sometimes, they make people in danger. That’s terrible!

How do people stop this? They make some model animals to scare the seagulls away (把……吓跑), and they also ask people to cover (遮盖) their food well, (A) _______ these two kinds of steps (措施) they take before are not useful. So they ask some dogs for help.

There are 13 dogs to help. Every day, they walk around the Sydney Opera House. Each of them works for four hours at a time. When they see the seagulls come near, they run after them quickly and keep them far away from people.

But the dogs are friendly to people. In their free time, they play with people around the Sydney Opera House. People also like to take photos with them. (B) They are one of the symbols of the Sydney Opera House now. How great dogs they are!

2 . How Fast Can Animals Shake?

When we get wet, we need a towel (毛巾) to get ourselves dry. When a dog gets wet, all it needs is to shake its body. A study shows that a wet dog can shake off half the water on its body in less than a second. In fact, this common act of a dog works better than a washing machine.

The study found that animal shaking begins with the head and ends with the tail. During a shake, the animal’s head and skin all move. Smaller animals must shake faster than bigger animals to get water off. For example, in one second, a rat can shake 18 times, a dog 6 times, and a bear 4 times. Bigger animals can get their body with fewer shakes.

For animals, shaking is not just about getting themselves dry. It is also about saving their lives. Being wet makes animals heavier, and that makes them harder to run. In the animal world, how fast an animal can run often decides whether it will live or not. Maybe that is why the “wet-dog shake” has become a common habit of many animals.

3 . 阅读下面材料，并按要求完成1至5小题。

Helping Birds in a Changing World

Do you think birds are interesting? Do you like spending time outdoors? Do you care about wildlife and the environment? If you answered yes to these questions. you might think about becoming a bird biologist. Bird biologists are scientists who study birds.

Birds are interesting for many reasons. Birds have a lot in common, but at the same time, they can be very different from one another. All birds have feathers (羽毛), and most of them can fly. They are in different sizes from hummingbirds (蜂鸟) smaller than your fist (拳头) to ostriches (舵鸟) taller than the tallest person. Ostriches can’t fly, but they can run up to 70 kilometers an hour! Bird biologists work to understand more about birds, their habits, and their homes. Some kinds of birds are dying off because they travel a long way during migration (迁徙). In North America, birds travel to northern places in the summer and to more southern places for the winter. Bird biologists are studying how and where birds get hurt along the way and trying to help them. But that’s not all bird biologists do! Beth Flint is a bird biologist in a wildlife refuge (保护区) near Hawaii. She tracks (追踪) all the different kinds of seabirds in the refuge. She enjoys working outside, but she also works in an office. She reads research studies about all the animals in the wildlife refuge, and makes plans to help protect them, especially the birds. She talks to volunteers about the wildlife in the refuge, too.

To become a bird biologist, Dr. Flint studied many fields that all connect. She learned about wildlife, forestry, biology, zoology (the study of animals), botany (the study of plants) and ecology (生态学). Her interest in seabirds started when she was a student. She saw a photo of Atlantic Puffins on arock and wanted to learn more about them.

You never know where your interests may lead (引领) you. They may lead you to become a scientist who studies wildlife!

阅读短文，根据其内容完成以下任务。

任务一：回答问题。

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任务二：列举出一条某些鸟类灭绝的原因。（用英语列举）

任务三：根据短文信息补全下面句子。

Hi, my name is Duoduo. I’m not a girl, and I’m not a boy. I am a brown dog. I am 4 years old. I’m in a big family and now we are in Lanzhou, China. Here is a photo. You can see me in this photo.

The girl in the photo is Betty Black. She is 13 and her favorite color is red. The boy is Jason Black, Betty’s brother. He likes green. They go to the same school. They are my good friends.

In the photo, you can see their parents and grandparents too. They are very nice. They are good to dogs! I am very lucky（非常幸运）!

Every year some birds fly south when days turn cold and leaves from trees start to fall. ①They travel a very long way to find a warmer winter. This travel is called migration（迁徙）.

Birds do that because in winter most of the plants die and some insects（昆虫）hide. ②fly, to, They, away, food, enough, find. The next year, when there is ③much food for them to eat, they will come back.

Birds fly in some ways. For example, they fly in groups like the letter V or in a row. The trip is often hard and it may be dangerous. ④But they never gets lost because they look at the sun, the moon and stars.

The lion and the antelope（羚羊）

On he grassland in Africa, there is a lion and an antelope .The lion runs faster than the antelope. ①Every morning, when the antelope wakes up, he says, “I must run faster than the lion may eat me.”And just at the same time, the lion wakes up from his dream, and he says, "I must catch up with the antelope and the lion both start to run,②They all want to live, so they try their best to be better.③animals, are, the, we, same, the, as,（ ）Whether you are a lion or you are an antelope.④if you want to live a good life, you can’t stop work hard.

In Thailand(泰国)，there are many elephants. They are very useful. They can carry heavy things so they can help people do a lot of hard work. And they are very clever. They can act and dance. Sometimes they can play with people. Many people go to Thailand to have fun with the elephants. It’s very interesting.

But do you know there is a festival for the elephants in Thailand? It is called Elephant Day. It comes at the third weekend of November. On that day, the elephants don’t work or act. They can have a good rest. People give them much good food like fruit and vegetables. People also have some activities for them. On that day, the elephants can wear colourful clothes and eat nice food. They enjoy themselves a lot then.

Root Vegetables

Would you like to eat a root? You probably already have. People and animals eat many kinds of roots. ①Most roots that people eat are usually called root vegetables. A root vegetable is what we call veggies that grow underground.

A carrot is one type of root vegetable. It is the orange, edible root of the carrot plant. ②to, many, in, like, people, salad, put, it( . ) A turnip, is another root vegetable. It is a member of the cabbage family. Turnips are usually eaten boiled, steamed, roasted, fried, pickled, or even raw.

③Although some people do not consider potatoes to be a veggie, but they are a root vegetable. People like to eat them mashed, boiled, and fried. Sweet potatoes, yams, beets, and leeks are some other root vegetables that people like to eat.