More and more people like keeping pets, so pet hospitals are usually very busy. Kind persons who love animals are needed to provide help in busy pet hospitals. Those vets (兽医) will teach them how to take care of the pets.

    Scientists think that pets will probably be much smaller because people in the future will live in much smaller space. Scientists are now working on making very small farm animals. The same thing might be done to make small cats and dogs.

    It's said that one day you might own a panther (豹) as a pet. Some scientists believe that they might have to start turning wild animals into pets since this might be the only way to save them from dying out.

    What about buying a robot to be a pet? This may sound silly, buy it could become true. Robot dogs have been made to sell. They are like real dogs. These pets might become more and more popular in the future.

    Lots of people want pets while they are on holidays. A hotel in Minnesota has solved this problem. They lend cats to their guests. Many experts (专家) believe that this idea will become more and more popular. It is very possible that in the future you will be able to order a pet, as well as room service, at a hotel.

    It's hard to make friends if you stay at home all the time, so get out of the house and do things that will put you in touch with(接触)other people. It's easier to make friends with them when you find you like the same things as other people.

Don't be afraid to show people what you're really good at. You can talk about the things you like and do best. People will be interested in you if they, hear something interesting about you.

    Look at people in your eyes when you talk to them. That way, they'll find it easier to talk to you, or people may think you're not interested in them and may stop being interested in you.

    Be a good listener. Let people talk about themselves before talking about "me, me, me” You can ask people lots of questions and show that you are interested in their answers.

    Try to make friends with the kind of people you really like, respect(尊敬)and admire(羡慕). You shouldn't just make friends with those people you will meet them easily. Try to be friendly with all kinds of people. That way, you'll have a bigger group of people to choose from. Then you'll be easier to make friends with other people.

①Reading is a good hobby for all kinds of reasons. 

②First, reading is fun. You can always keep yourself happy if you like reading. You will never feel bored or tired. 

③Second, you can read a book almost anywhere: in a car, on a plane, or even in the bathroom. All you need is a book. 

④Third, reading is useful. It's also a good reason. If you take reading as a hobby, you will get better and better at it. And you will read faster and find it easier to understand what you read. As your reading skills improve, you will probably find your schoolwork becomes much better. 

⑤Some people say that reading is out of date. This is not true. You can read books online by using computers or mobile apps. Good readers may become writers. They always have more things to write about. 

⑥Reading is a wonderful hobby. Why not start reading right now? 

 Dr. Jack Todd is very interested in clean water. {#blank#}1{#/blank#}, so it's natural that he is to develop a small and affordable system(系统) to clean wastewater. His" Living Machine" can clean wastewater in your home or in your business.

{#blank#}2{#/blank#} The wastewater goes into a big plastic tank where bacteria(细菌) start to break down the waste. {#blank#}3{#/blank#}, the water is brought into a greenhouse filled with plants and fish.

 With the help of sunlight, the plants and animals remove more chemicals from the water, making it cleaner. Then the water can be reused for washing or bathing {#blank#}4{#/blank#} but the water is clean enough for watering the flowers, washing the dogs, or even for bathing or swimming.

 The advantage of this technology is that it is affordable and good for the environment. {#blank#}5{#/blank#} It can help to use less fresh water, and it can help keep the water supply unpolluted.

You might have seen beautiful rainbows in the sky before. They form when sunlight falls on water drops in the air. But in fact, moonlight can also create rainbows in the same way. They are called "moonbows". They are similar to rainbows, but they are created by moonlight instead of direct sunlight.

Moonbows are less common than rainbows. Different weather and astronomical(天文学的) conditions have to be just right for moonbows to be created.

The moon has to be very low in the sky-only 42 degrees from the horizon(地平线). The moon period has to be a full moon or nearly full. The sky must be very dark for a moonbow to be watched clearly-any bright light can obscure it. Water drops must appear in the air in the opposite direction of the moon.

Moonbows appear on the opposite side of the moon and usually look white to the human eye. This is because their colors are not bright enough to be noticed by the human eye. It is possible, however, to view the colors in a moonbow using long exposure (长时间曝光) photography.

Moonbows more often appear in some locations around the world. Most of these locations usually have waterfalls, which create thin fog in the air. Some of these locations are the Yosemite National Park in California and Cumberland Falls State Resort Park in Kentucky, US; Victoria Falls on the border of Zambia and Zimbabwe; and Waimea in Hawaii, US.

Moonbows do really happen. So at a certain time and a certain place, when a moonbow happens to appear, you can't miss it if you're right there.

China is a great country with more than 5，000 years of history.There are many places of interest.Some of 1 are beautiful mountains, long rivers and fantastic lakes, which attract(吸引)2 tourists from all over the world every year.

Many mountains, such as Mount Taishan, Mount Emei and Mount Huashan,3 very famous.It is reported that most people like to go to Mount Taishan to watch the sunrise.

There are many rivers in China.The Yangtze River is the4 one and the second longest one is the Yellow River.They are the birthplaces of Chinese culture5 Chinese ancestors were born in the areas.

There are also6 great number of lakes.One of the most famous lakes is the West Lake.Have you heard of the love story about Xu Xian and the White Snake? It is said that the story7 on the West Lake.The West Lake is the best lake that I have ever visited.It lies8 Hangzhou, Zhejiang Province.

The scenery(风景) is9 attractive that visitors often lose themselves in it.The West Lake has become famous for not only its special scenery but some beautiful poems.The great poets Bai Juyi and Su Dongpo wrote plenty of10 about the lake.