Dolphins are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time—at least twenty or thirty year.

    Like some other animals, dolphins use sound to help them find their way around. They also make these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.

    Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people.

    There is a story about sailors in the 19^th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903 Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded (伤害) Jack. He recovered and for nine years more continued to guide all ships through the area—except for The Penguin.

    Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them.

Welcome to Beijing, the capital city of China. I'm Ma Li. I'll be your1 . You'll have a two-day tour in Beijing. 

On the first day, you'll get up2 in the morning and then go to Tian'anmen Square to watch the flag-raising ceremony(升旗仪式). After that, you can take a walk in the square. At about half past eight, you'll3 the Palace Museum. There you'll see many4 things in ancient times. At eleven o'clock, you'll walk to Beihai Park and stay there for two and a half5 . You can go boating in the park. In the afternoon, you'll go to Wangfujing Dajie. There are many large shops6 the street. There you can go7 and buy your favourite things. 

On the second day, you'll go to the Great Wall after you have breakfast. You'll have two hours to8 on the wall. So don't9 your mobile phones and cameras in the hotel rooms. After you have lunch in a10 , you'll leave for the Olympic Sports Centre. After that, you'll go to the Summer Palace. At six o'clock, you'll11 your tour and go back to your hotel.

Living in a big city also12 a few bad things. People are everywhere, especially on the underground. There are a lot of cars. So the traffic is a little13 because of traffic jams. 

Come and visit Beijing. And I14 you will fall in love with this city. I'm sure that you will have a15 time during your two-day tour in Beijing. 

For most human history, the stars sh one brightly in a dark night sky. But today, with many man- made lights, it is difficult for us to watch some wonderful sights: stars, planets and even galaxies(星系). This is in fact a kind of light pollution.

According to scientific research, you can see about 2,500 stars without using any special tools. But because of light pollution, you can only see 200 to 300 stars from the countryside, and no more than 10 stars from a city. In most big cities, people cannot see stars like they did in their childhood.

The main reasons of more brightness of the night sky are industrialization(工业化) and the growing use of outdoor LEDs, which are much brighter than traditional lighting. It brings a lot of bad results. Scientists find it hard to see the stars and planets. And too much light might make birds lose their ways at night. Some insects(昆虫) often fly towards light and may knock into buildings and lose lives. Sometimes light pollution makes us have sleeping problems.

Small actions, big changes. To stop things from going worse, we should use the right amount(数量) of light, in the right place and at the right time. Using yellow- colored light instead of white light, shining lights down at the ground instead of up into the sky are also helpful. We'd better remind people around us to help cut down light pollution as well.

Hopefully, in the near future, humans can enjoy the beauty of the night sky again and all wildlife will live a peaceful life!

British schools are very different 1 Chinese schools. In Britain, students have2 classes than in China. In Britain, classes start at around 9:00 a. m. and 3 at around 3:30 p. m. British students also have less homework 4 Chinese students. This gives British students more free time 5 to school clubs. There 6 many different school clubs like football clubs, swimming clubs, film clubs and book clubs.

In Britain, students study the same 7 as in China. They have to study Maths, English, History, Geography, PE, Computer Science, Art and so on. Just 8 in China, different students have different opinions about schools in Britain. Some students think that school is very9 , important and useful. 10 some students think it is boring and difficult.

Do you have a daily routine? A daily routine is a set of behaviors (行为) or practices we do every day. For example, if you go to school every day, you may like to study or do homework at 1 time every day. Having a daily routine helps us do better or even helps us feel 2 during hard times. For me, I go to work every day. I like to follow a certain routine before, during, and3 work. 

In the morning, I wake up with my alarm clock (闹钟) and go to take a 4 . I leave some time open between showering and leaving for work to relax and watch a video or two. Then, when I'm at work, I like to 5 things online in the morning before writing stories in the afternoon. During my lunch break, I like to go home to feed my cat and 6 a nap (午睡). 

Later, after 7 , I study Chinese before eating dinner. Finally, I might play some games or 8 a book before going to bed. This is my routine during the work week, but on 9 I like to sleep before washing clothes and cleaning up. 

By 10 a routine, I feel ready to take on what comes my way during the day. 

I live in Guangzhou. {#blank#}1{#/blank#}

Everything is alive. The trees have a lot of green leaves, and they can help keep me cool on sunny days. {#blank#}2{#/blank#} They smell really nice.

The best thing about summer is the summer holiday!{#blank#}3{#/blank#}I enjoy going swimming with my friends. I also love going running in the park with my best friend. {#blank#}4{#/blank#} and it is nice to eat ice cream on a hot day. Sometimes I go to the beach with my family. I like to build sandcastles with my little sister.

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