Everyone likes living in a clean and comfortable environment. If the environment(环境) are bad， it will affect our body， and make us not feel well. Sometimes we may be terribly ill. At that time we don't want to work， and we have to stay in bed and rest at home. So the environment is very important to us.

    It's germs(微生物) that makes us ill. There are germs everywhere. They are very small and you can't find them with your own eyes， but you can see them with a microscope（显微镜）They are very small and there may be hundreds of them on a very small thing， Germs can always be found in dirty water. When we look at dirty water under the microscope， we shall see them in it. Germs can also be found in air and dust（灰尘）. If you cut your finger， some of the dust from the floor may go into it， and you will have much pain in it. Sometimes the germs will go into all of your bodies， and you will have pain everywhere.

    To keep us healthy， we should try our best to make our environment cleaner and tidier. This needs us to work together.

    What was discovered by accident? The answer is penicillin (青霉素). It kills germs. By killing germs, it saves lives. Suppose you are sick. You go to a doctor. She examines you. She says you have a “staph” infection (葡萄球菌感染). She gives you some medicine. You take it. The medicine knocks out the staph. Soon you are well. Before penicillin, this would not happen. Staph was almost sure death.

    Everyone wanted a medicine. Laboratories worked day and night. They grew the staph in small dishes. Then they tried to kill it. Nothing worked.

    The laboratory dishes had covers on them. They kept things from falling into dishes. Molds (霉菌) were a big worry. They are always in the air. You can't see them. They're too small. There are thousands of different molds. Molds can make an experiment (实验) fail. That's why dishes are covered.

    Dr. Alexander Fleming was working to kill the staph germ. He worked for years. One day he took a cover off a dish. He looked inside. There was a thick growth of staph germ. There was also some mold. Then he saw something strange. Where the mold was, there was no growth of staph. This is what Fleming probably thought. “By accident, I found a mold to kill the dreaded staph.”

    This is how penicillin was found. But here's the real miracle (奇迹). There are thousands of kinds of molds. But only one kind can kill staph. The mold must have fallen into the dish a few days before. The cover was probably off only a few seconds (秒). In those few seconds the right mold fell into the right dish. Another man might have thrown the dish away. But Fleming was very careful and smart. He understood what the mold did. How lucky the humans were!

    Four Simple Ways to Better Your Writing

    Keep It Simple

    My first tip for improving your writing is: keep it simple.

    Now, I know it's better to keep things simple and do it well, rather than over-complicate(使过分复杂) everything and do it badly.

    So, in English writing exams, you want to show off your English, but you want to show off your right English, not all this English that you don't know or haven't learnt yet.

    Have a Collection of Set Phrases(固定搭配)

    In order not to make mistakes, it's a really, really good idea to have a collection of set phrases and key words that you can use in the exam. Make sure that you have different ways to …

    Compare：in the same way, at the same time

    Give your opinion：from my point of view, in my view

    Add information : in addition, besides

……

    So, that's just a very brief list showing you exactly what you need to study to be fully prepared for any English writing exam.

    Reduce Your Word Number

    Use as few words as possible to reduce your word number.

Avoid pointless words like very, a lot. Replace them, instead, with a strong word. By using strong words, you can reduce your word number by a fair bit.

    Another way is avoiding there is and there are. We want everything to be as clear as possible. Thus, you can increase the quality of your writing.

    Check Your Work

    Tip number four. Students will make some stupid mistakes when they're writing. After being asked to correct the mistakes, they will say, "We already know this. So easy!" and it's because they don't check their work.

    I personally think it's much better if you write less and check more. Fewer words, high accuracy(准确率). Then you will make your writing better.

    Four Simple Ways to Better Your Writing

    August has always been difficult for me. It is the time when I realize that the books my English teacher assigned(布置) to me are not going to read themselves and that I have a difficult month in front of me.

    You might think that I don't want to spend my summer reading, hut that's not the problem；I love reading. On the first day of summer holiday this year, I borrowed a Gathering of Old Men by African-American writer Ernest Gaines. I enjoyed it very much. I read all the magazines that my parents subscribe to(订阅) and spend about     minutes every day with the morning newspaper.

    So why do I hate summer reading for school？Because the books on summer reading lists are often slow-going and just uninviting(不吸引人的) . Teachers don't under-stand that summer reading can be interesting as well as educational. They choose books called "spinach books": good for you, but not much fun to take in. Every summer, I read them, hate them and get bitter about the experience.

    This bitterness started three years ago when 1 began high school. As preparation. my English teacher told me to read The Age of Innocence(《纯真年代》). At 14, I couldn't understand the love 100 years ago in the story. I only know my love for baseball. The Age of Innocence was completely different to my life. What is more, sometimes I guess teachers don't think exciting plots make for "good literature". To me, a good writer describes events and characters in a way that makes the reader want to know what happens next.

    If I were making up a summer reading list, it would include The Friends of Eddie Coyle by George V. Higgins. The Right Stuff by Tom Wolfe, and Into Thin Air by Jon Krakauer. These are all books that have literary value(文学价值) and can also entertain kids. If the teachers could add a little fun into the books they assign, my Augusts would be a lot more enjoyable.

Once upon a time, there was a young man called Ma Liang He was poor. But he was kind and hard-working and liked drawing. One night, he dreamed(梦见)that an old man gave him a magic paintbrush(神奇的画笔)and asked him to use it to help poor people. When he woke up, he found the magic paintbrush in his desk.

From that day on, he used the paintbrush whenever people needed help. When he saw that people had no water to use or drink, he drew a river and the river came to life. People could bring water from the river.

Then many people knew about the magic paintbrush. But a few days later, a rich and bad man heard that the magic paintbrush could turn everything to life. He took the magic paintbrush away from Ma Liang's house and put Ma Liang into prison(监牢). Then he drew a lot of pictures with the paintbrush, but they could not become real.

So he said to Ma Liang, "If you draw some pictures for me and make them real, I will make you free."

The young man agreed and drew a sea first. Then he drew a golden mountain which was far away from the sea. The bad man said, Draw a big ship quickly. I want to go there to get the gold."

After the young man drew a big ship, the bad man jumped into the ship with his family and friends quickly. When the ship moved to the middle of the sea, the young man drew a large wave(波浪)and they never came back.

There are 24 solar terms(节气)in China. They can guide farming activities and are believed to be an outstanding achievement by ancient Chinese. 

Grain Rain" is the sixth solar term in the 24 solar terms and it is the last solar term in spring. It falls on April 20 this year. The term"Grain Rain" came from a folk story. When Cang Jie created writing characters, grain came down from sky like rainfall. Therefore, the Yellow Emperor named this day as the "Grain Rain". When this day comes, the number of rainfall increases. It is very important for the growth of the grain. 

Nowadays, different areas have different customs during "Grain Rain", Picking and cooking tea leaves: "Grain Rain Tea" is the name for the tea made around the time of "Grain Rain" in the south of China. it is considered as one of the best kinds of tea. it not only has a strong and good taste but also can last for a long time in water. 

Blessing(祈福)to the sea: "Grain Rain" is a perfect time for fishing. Since it gets warmer and warmer, the sea also gets warmer and more fishes swim in the sea. Fishermen in the north often bless for safety and success on the sea. 

Killing insects: As the weather gets warmer. insects become more active. Farmers in Shandong, Shanxi and Shaanxi often use different methods to kill insects. 

Taking a bath: In some of the north-west areas, people take the shower in the river during "Grain Rain" period. They think it can help them be far away from the bad luck.