It is August 7th today. It is early and it is time to eat. Chen Hua is ________. To eat her breakfast, she uses a knife, a fork, a spoon and... scissors. The scissors are needed to open food packages. Chen Hua floats (漂浮) at table with the others. She eats scrambled eggs (炒蛋), sausages, stewed (炖) tomatoes, and a banana. She also has orange juice. Astronauts can eat most foods in space even ice-cream.

After lunch, Chen Hua brushes her teeth. It is not easy! Small ________ of water float in space. They are like little balloons. There are two special hoses (软管) for showers. One hose ________ water. The other hose takes it in. The astronauts do not use towels! Astronauts need a toilet too, but the toilet is a very special one. It does not have any water. It uses vacuum (真空装置) to take ________ away.

It is time for Chen Hua to exercise. It is very important to exercise in space. On Earth, there is gravity(地球引力). You must use your muscles (肌肉) ________, to stand up, sit down and walk. In space, there is no gravity. You float. This makes your muscles weak. Astronauts must exercise for two hours every day. If they do not, their muscles will become weak and they won’t ________ walk when they return to Earth.

2 . Venus, the evening star, is a brother planet of our earth.     1     It’s covered with air and clouds. Scientists once thought that there might be some kinds of life under the clouds. Recently, they have found that it’s too hot—400℃.     2     Why is it so hot then?     3     CO₂ allows the heat of the sun to go to the ground. At the same time, it prevents the heat from going out.     4     Thus（因此）most of the heat from the sun is kept in the air forever. The temperature goes up every year, and it’s 400%℃ now.

The United Nations suggested that all leaders in the world should meet to discuss cutbacks（缩减）of CO₂. Other people in Europe have started a battle called “Green Peace Movement”.     5     No one would like to change our green earth into a red hot planet like Venus.

7 . I rise in the east, and it is day. I send my light into your room, and tell you it is time to get up. When I shine, you can not lie in bed or sleep. You must work and study.

I send my light here and there. I shine over the trees, the houses, the hills and the water, and I make everything beautiful.

I am high up in the sky, higher than the highest mountains, higher than the clouds. Sometimes I hide(藏)my face behind a thick cloud, and you cannot see me. But when there are no clouds and the sky is blue, and when I shine at noon, you can not look at me, because I am too bright.

When I am going to rise in the morning and begin the day, the birds fly into the sky to meet me, and cocks crow to tell everybody that I am coming.

It seems that I am a great traveler in the sky. I never stop, and I’m never tired. But, in fact, it is the earth that is traveling around me all the time.

10 . 请你用英语写一个火星生活指南，具体介绍一下火星上的情况。

Here is a guide to living on Mars.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Welcome to Mars!