What time of day can you think most quickly? Are you a morning person?" Or does it take you a few hours to get your brain going? A lot of recent research suggests that we should pay attention to our body clock. It can tell us what time of day we can perform best at.

    Many people work best later in the morning. This is because the body's temperature takes time to rise through the day. Taking a warm shower when you wake up can help your body's temperature rise quickly.

    But everyone's body clock is different and some are special. Morning people will get up early and work better early in the day." Evening people will work later, but work better towards the end of the day.

    Research shows that we're better at some activities at certain times of the day." Physical performance is at its best between 3p. m. and 6p.- m.-,- so it's better to exercise later in the day.

    Between noon and'4p. m. , people begin to pay less attention. This is because we think less quickly after, a big meal. Research also shows we become sleepy around 2 p.m. This is why people in Spain take a short sleep in early afternoon.

    Finally'it is best to eat when we' re active. This allows our body to burn calories (卡路里) better and stops our blood sugar levels from getting too high.

Green is an important color in nature. It is the color of grass and the leaves on trees. It is the color of most growing plants, too.

Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that is not yet finished or plants that are not ripe.

For example, a greenhorn is someone who has no experience, who is new to a situation. In the fifteenth century, a greenhorn was a young cow or ox whose horns had not yet developed. A century or so later, a greenhorn was a soldier who had not yet had any experience in war (战争) .By the eighteenth century, a greenhorn had the meaning it has today——a person who is new in a job.

About one hundred years ago, greenhorn was a popular expression in the American west Old—timers used it to describe a man who had just arrived from one of the big cities in the east. The greenhorn didn't have the skills that he would need to live in the hard, rough country.

Someone who has the ability to grow plants well is said to have a green thumb. The expression comes from the early nineteen hundred.

A person with a green thumb seems to have a magic touch that makes plants grow quickly and well. You might say that the woman next door has a green thumb if her garden continues to grow long after your plants have died.

The Green Revolution (革命) is the name which was given some years ago to the development of new kinds of rice and other grains. The new plants produced much larger crops. The Green Revolution was the result of hard work by agricultural (农业的) scientists who had green thumbs.

Where would you like to stay when you go on a vacation? What kind of hotel would you like to choose? Different people have different ideas. In fact, there are all kinds of special places to stay when you go on a vacation. There are hotels, motels, youth hostels, B&Bs (bed-and-breakfast), home stays, and more. Each is for a different kind of people. If you travel by car, a motel is good for you. You can park your car outside your room. A youth hostel is good for young backpackers (背包客). A B&Bs might be best for couples (夫妻) or anybody who doesn't like being noisy.

    For people who like reading, the library hotel in New York is a must-see. Each of the hotel's 60 rooms is full of books. In fact the hotel has over 6, 000 books in all. If history is your thing, the 9th floor is for you. If you are interested in math and science, you can stay on the 5th floor. Artists will feel at home on the 7th floor. The Poetry Garden is on the 14th floor, and there is a cozy sofa in it. You can sit on the sofa and enjoy reading a good book or relax outside in the Poetry Garden.

    Imagine you are taking a walk on the beautiful beach. Just then, your feet step over something and you hear a crack (噼啪声) —an empty plastic bottle. Things like this are happening more often because of sea rubbish.

    Studies show that 80%of all the waste is from the land. The waste is mainly plastics (塑料制品) which are really hard to degrade (降解). So the rubbish will remain there for a long time. Some of the pollution is caused accidentally. For example, about 10,000 product-filled boxes are lost at sea every year from business ships. Sometimes people just throw things into the water from boats or land. Many large rubbish areas are formed in the North Pacific Ocean.

    Thankfully, the situation isn't ignored (忽视). Groups like the National Oceanic and Atmospheric Association (NOAA) are taking action to help clean the sea. Since 2006, 76 projects have cleared out 3,814 metric tons (公吨) of rubbish from the sea. Methods of rubbish cleaning include using machines to remove (移除) the waste away from the surface of sea water. Besides, special nets are set by the mouths of rivers to stop the rubbish before it reaches the sea. If everyone does his part, sea rubbish seems like a problem that can be solved.

One day, a successful businessman was getting ready to go to his office in the morning. When he opened the door of his car, a stray dog(流浪狗) sleeping under his car suddenly came out and bit his leg! He was angry and threw a rock at the dog, but he was not able to hit it. 

Upon reaching his office, the businessman called a meeting of his managers. During the meeting, he took out his anger on his managers. His managers were upset about this, and took out their own anger on the employees(员工) working under them. Gradually, the businessman's anger spread through the whole company. '

The businessman was still angry after returning home. His wife opened the door. She asked him, "Why are you so late today?" The man shouted at his wife, "I didn't go to the office to play soccer, I went to work. So don't ask me such stupid questions!" His wife was upset about being shouted at for no reason. She turned her anger on their son, who was watching TV. "This is all you do. You have no interest in studying! Turn off the TV now!" She yelled. 

The son became upset as well. He walked out of his house and saw a dog passing by. He picked up a rock and threw it at the dog angrily. The dog ran away, barking in pain. 

Sometimes, when we are angry about something, we might take out our anger on others who are not to blame for our mood. This is not fair to others. We should learn to control our anger.