Australia is one of the largest countries in the world. It is 1 smaller than China. It is in the south of the earth. Australia is big, but its population is 2. The population of Australia is nearly as large as that of Shanghai.

    Enough laws have been 3 to fight against pollution. The cities in Australia have got little air or water pollution. The sky is blue and the water is 4. You can clearly see fish swimming in the rivers. Plants5very well.

    Last month we visited Perth, the biggest city 6 Western Australia, and went to a wild flowers' exhibition(展览 ). There we saw 7 large number of wild flowers we had never seen 8. We had a wonderful time. Perth is9 for its beautiful wild flowers. In spring, every year Perth has the wild flowers' exhibition.10visiting Perth, we 11 a day in the countryside. We sat down and had a rest near a path at the foot of a hill. It was quiet and we enjoyed ourselves. Suddenly we heard bells ringing at the top of the hill. What we saw made us 12all our things and run back to the car as quickly as we could. There were about three hundred sheep 13towards us down the path.

    Australia is well-known for its sheep and kangaroos. After a short drive from 14 town, you will find yourself in the 15of white sheep. Sheep, sheep, everywhere are sheep.

    Some day little cars may take the place of today's cars. If everyone 1 such a little car in the future, there will be less 2 in the air. There will be more parking places in the cities, and the street will be 3. Now the space for one car of the usual size can 4 more than one such little cars. Driving will be 5, because these little cars can go only 50 kilometres an 6. The future cars will be fine for going around the city, but they will not be 7 for going far away. The little cars 8 only two batteries, one battery for the motor, and the other for the horn (汽车喇叭) and the lights. If we still 9 the big cars along with the small ones; we will need to 10 two kinds of roads. That is, there will be some roads for the big fast cars and other roads for the smaller and slower ones.

    Nowadays many people are talking about aliens. You might see them 1.

They are very smart, but they look 2. They travel in spaceships.

    But are there really aliens in space? British scientist Stephen Hawking, thinks so. He says that people 3 look for aliens. He thinks they are dangerous.

    On a British TV programme, Hawking says, "It is 4 that there are aliens in space."

    "They might live in big ships. They have 5 all the resources(资源) from their home planet." he says.

    He thinks such aliens might get resources from Earth and then go away. They may bring 6 to the Earth.

    Many people like to see animals in the zoo. But do you know most of the animals in the zoo are very 1? Animals usually live in the forests or mountains. They like to live 2. But the life in the zoo is quite 3 from that in the forests and mountains. They have to stay in cages all day and wait for the zoo 4 to feed them. They can't come out of the cages. So they have to walk round and round.

    The wildlife park can solve all these 5 for them. All the animals live in the open air everywhere in the 6. They 7 stay in cages. They can run, jump and play with other animals happily. The most important thing is that they are free and happy, and they are protected there. People are not allowed to hunt in the wildlife park.

    Some of the animals in wildlife parks are friendly, but some are fearful, such as lions, wolves and tigers. But it's not dangerous 8 the animals in wildlife parks. You can take a bus to see the animals. It will be very 9 if a tiger or a bear looks at you through the window. But don't worry. 10 will happen. You are quite safe inside the bus.

    My name is Miranda Gibson. I have been at the top of a tree for five months now. Some people might wonder 1 on earth I would choose to do that.

    I have walked 2 this forest many times. On 12 December 2016, machinery (大型机械) rolled into the forest and the destruction (摧毁) began. I couldn't bear (忍受) the thought that these forests would be 3 forever. So, on 14 December 2016, I put my clothes into a bag, 4 my job plans, and climbed 60 meters to the top of this tree. I have been there ever since.

    Life in the tree tops can be challenging. I have times when I feel frustrated (沮丧的) and I wish I could 5 to have a holiday for a few days! There are times too, when I feel terribly 6. I miss my friends and family.

    Living on the tree has been exciting and encouraging. I am willing to 7 up here for a long time, 8 I honestly hope it won't be too 9 before I can put my feet on the ground below and stand in a forest that will never 10.