阅读理解

Find Which Direction Is South

    Do you have a good sense of direction? If not, please take with you a compass. But if you forget to take a compass, you can still find your way. 

    It's never a wise idea to believe that the family member who was good at the job of map-reading knows where the family is. You can tell by the troubled look on their faces that nothing on the ground seems to match the map. Never mind. The sun is shining and it's still morning. If you don't know the exact time, you can still find out where south is, but you'll need to be patient. 

    ①Find a straight stick and put it in the ground in a place where you can mark its shadow(a dark shape on a surface that is made when something stands between a light and the surface). 

    ②Try to position the stick as vertically(垂直)as you can. You can check this by making a simple plumb line(铅锤线). You haven't got one? OK, use a thread(线) from your clothes with a button(纽扣) tied at the end to act as a weight.

    ③Mark the end of the shadow cast(投射) by the stick.

    ④Wait about half an hour and mark the end of the shadow again.

    ⑤Keep doing this until you have made several marks. 

    ⑥The mark nearest the stick will represent the shortest shadow, which is cast at midday, when the sun is highest in the sky and pointing to the exact south. 

    ⑦Pick a point in the distance along the line between the shortest shadow and the stick.

    ⑧That point is south of where you are. 

    ⑨Now you can turn the map, like you did before, and find which way you should be travelling. 

    Most of the flowers in nature are red, orange and yellow. If we have seen a black flower, it's chance in a million.

    People have made a survey to colors of more than four thousand kinds of flowers and discovered that only eight of them are black.

    As we know, sunlight is formed by seven colored lights. The wavelength of each light is also different, so the quantity(量) of heat in each light is also different. Flowers, especially their petals(花瓣), are easy to be harmed by high temperature.

    Black flowers can take in the light of all the wavelengths that make them dry up because of high temperature, so black flowers can hardly resist(抵抗) sunlight. But red, orange and yellow flowers can protect themselves from sunlight by reflecting(反射) the red light, orange light and yellow light, each of which has a large quantity of heat.

    This is a street crossing. There are red and green lights at each corner. Drivers must watch the lights carefully.

    When there is a green light, the cars may go on. When there is a red light, the cars must stop.

    They must wait until the red light changes (变成)to green. Then they can go on. Sometimes the cars want to make a right turn or a left turn. They can make a right turn when the light is green or red. But they must wait until the green light is shining (闪亮) if they want to turn left. Some people are color-blind (色盲的). They can't see the difference (不同点) between red and green. These people mustn't drive, or there may be an accident (事故) .We must keep our street safe (安全的).

A good breakfast is very important. You will understand it. By breakfast time you have not eaten anything for twelve hours. Your body needs energy for morning activities(活动). One good breakfast can serve enough energy. It should be rice or bread, an egg. milk and fruit. On a cold morning, a cup of hot milk is necessary(必需的). A good breakfast helps you to smile more easily. It helps you to be more friendly and also to work better and play more happily. Your whole day will be more fun after you have enjoyed a good breakfast.

Hi! Everyone. I'm Mark Brown. I'm English，but I am in Shenzhen，China now. I'm in Yuying Middle School. My school is nice. The telephone number of my school is 557—8876. I like green and blue. I have a green cup and a blue pen. My phone is green, too. My number is 357-8597. I have two friends, Li Wei and Liu Jun.

Li Wei is 12. Li Wei likes red and green. Her quilt is red，and her pen is green. She can say ruler，pen， quilt and map in English. What is Li Wei's phone number? She has no telephone. She has a QQ. The number is 398082037.

Liu Jun is 13. His ruler is white. His quilt is white and his cup is white. Because he likes white. What's Liu Jun's telephone number? It's 15974178. What is his QQ number? It's 15974178，too.