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.

There are many colors in nature. But do you think that a color has weight? Let's do a test.

First, put two objects with the {#blank#}1{#/blank#} weight into two boxes. Then cover the boxes. Third, wrap (包裹) one box with a red piece of paper, the other with white. Now hold the boxes {#blank#}2{#/blank#} your hand one by one. Which one is {#blank#}3{#/blank#} ? It is certain that you will think the red one is heavier. Why do you think so? A scientist did many {#blank#}4{#/blank#} and found that different colors have different weights in a man's mind.

Also, scientists say that people accept the colors they like, and {#blank#}5{#/blank#} the colors they hate. So your body and mind will be {#blank#}6{#/blank#} by using the colors you like. Or you'll be nervous {#blank#}7{#/blank#} even get ill. For example, you {#blank#}8{#/blank#} blue and hate red. If you stay in a room with red windows and wallpaper for two hours, you'll feel you have been there for {#blank#}9{#/blank#} hours. But if the room is blue, you'll feel you have been there for only an hour, And, if a person walks {#blank#}10{#/blank#} of a blue room and into a red room, his temperature will rise. That means our body temperature will change with different colors.

How do you go to work? Ride a bike? Take a bus? Take a car? Swim across river? In the city of Xishan, the Bingjiang river has become a famous swimming place, because some people swim along with their own things in the river to go to work.

To get from point A to point B, people in Xishan don't just swim with their clothes on, but instead pack (打包) their own things into the special bag. This bag will keep everything dry until they reach their destinations (目的地).

"I use 5 minutes walking from my home to the river. And I only use 10 minutes to swim across the river and 5 minutes to walk to my office. I have a special swim bag which I can put all my things in. But I used one hour to go to work by bus before." Li Hua, a local says.

The traditional traffic tools like cars and buses not only cause heavy traffic but also produce too much pollution in our daily life. Maybe it's time for us to change our ways to go to work.

Two Research Reports

A beach trip can be fun and relaxing. To have an enjoyable beach trip, you need to make plans for it. Here is some useful information .

Decide which beach to visit. Have a discussion (讨论) with your family. Before you look for information online, sit down and talk with your family to learn about their ideas. Write down their ideas so that you won't forget them. For example, maybe your daughter wants to look for sea shells and your son wants to try some water sports.

____ One of the most important things to bring on a family beach trip is a cooler (冰桶) full of ice and things to eat and drink! Because you will spend a few hours on the beach, your family will need some food and drinks. It's better to bring lunch for everyone. Some good beach food and drinks are fresh fruit, sandwiches, juice and so on.

Plan activities for your trip. The best part of a beach trip is that your family can play together! Make sure that you bring things that your family want to use when they are on the beach, such as sand toys, frisbee (飞盘) and cards. If you want to stay by yourself, you can also bring some books to enjoy yourself.

With good preparations, you are sure to have a good time on the beach!