You probably don't think about soil often, but the following report may help you learn about science of soil.
What is soil made of?
Soil is made of sediments (沉积物) and humus(腐殖质). Sediment is small pieces of rock broken down over time by rain, ice, and wind. Sediment is often found in water. Humus comes from decayed(腐烂的) plants and animals. It helps give plants a lot of the food they need to grow.
How does soil form?
Over centuries, rock breaks down into very small pieces.
The rock pieces mix with humus.
The humus gets thicker and thicker over time. Soil is formed(形成)l
How are soils different?
Soils can be different colors and have different textures(质感). Texture is how the surface of an object feels. Color and texture are two features(特征) of soil.
Plants and soil
Plants do not grow well in some soils. Sandy soi1 is too dry. It does not hold water. Soil with too much clay is too thick. Most plants grow well in dark, rich garden soil that has different sediments and a lot of humus in it.
The title （标题）： 1. | |
The things in soil | Sediment is often found in water. Humus 2. decayed plants and animals. |
The steps of forming | Rock breaks down into very small pieces. The rock pieces mix with humus. The humus gets 3. . |
4. | Soils can be different colors and have different textures. |
The relationship between plants and soil | 5. is good for plants to grow in. |
阅读下面短文, 简略回答所提出的问题。
It's a wonderful, warm summer day without a coud in the sky. You’re outside, and you can feel the sun's heat on your skin. Do you know what else you are feeling? You're feeling the sun's energy! Without it, the earth would be a cold, dark, lifeless place The sun's radiation(辐射) gives us light and heat energy.
The Sun's radiation can be harmful to us as well. We can't see it, but ultraviolet(紫外线) radiation comes from the sun along with heat and light. You can not see ultraviolet radiation, but it influences our health. Ultraviolet radiation is what burns our skin.
Ultraviolet radiation has three parts: ultraviolet radiation A, ultraviolet radialion B, and ultraviolet radialion C. Waves of ultraviolet radiation A and B may cause harm to our body when we get sunburned. The harm to our body can give us skin cancer(皮肤癌) and cause other health problems.
You can help to protect yourself from ultraviolet radiation by wearing sunscreen(防晒霜), sunglasses and hats.
Try to stay out of the sun when it is especially strong .You can find out ultraviolet radiation levels by watching the weather report on television.
1.What can we get from the sun's radiation?
2.Does the sun's heat burn our skin?
3.How many parts are there in ultraviolet radiation?
4.When do we have to keep out of the sun?
5.How can we find out ultraviolet radiation levels?
根据短文内容,用方框内所给词的正确形式填空, 使短文完整、正确。(每个词只能用一次，有两个多余词)
so young mountain try it stop thousand such or into while big |
Here is a classic story in ancient China.
Once upon a time, the 1. daughter of Yandi(炎帝) went sailing on the East Sea. Suddenly a strong wind rose and her boat turned down 2. she was enjoying herself. Just before she was covered by the waves, her spirit turned 3. a beautiful bird. As it flew over the sea, it cried sadly with the sound : Jingwei, jingwei”, then, people called 4. “Jingwei”
The bird lived on a mountain near the sea. It hated the sea 5. much that it decided to fill it up. Every day, it flew to and fro(来回地) between the mountain and the sea, carrying a stick 6. a stone from the mountain and dropping it into the sea.
One day, the sea said to Jingwei,“Poor little bird, 7. doing that meaningless thing! You’ll never fill me up.” Jingwei replied, “I'm sure that I’ll fill you up! I will , even if it takes me 8. of years! I'll fight on unlil you die!”
The brave little bird kept carrying sticks and stones from the 9. to the East Sea without taking a rest. We use “The bird Jingwei 10. to fill the sea” to describe people that are indomilable (不屈不挠的) and will not stop until they reach their goals.
Kate's father took her to the hospital to see her one-day-old baby brother They drove there straight from schoo1. Kate had never been inside a hospita1 before. 1._This was a new experience for her.
At the gate there was a large sign listing all the departments of lhe hospital, with arrows (箭头) showing how to find them. When Kate saw the A&E department(急救室), she asked,“What do those letters stand for?”“Accident and emergency,” replied her father,
2.“Last spring, I took our sister there because she fell off her bike,”
根据所给中文完成句子翻译。(共11分。局部翻译，每小题1分；整句翻译，每小题2分)
1.学生们渴望一个轻松的周末。
Students a laxing weekend.
2.彼得一家人尽力让我感到宾至如归。
Peter's family tried to .
3.爸爸过去常常酗酒，但现在戒掉了。
Dad too much, but he has stopped it now.
4.由于尽心竭力，昨天的才艺展示很成功。
hard work, the talent show was successful yesterday.
5.这副眼镜一定不是玛丽的，她不戴眼镜。
This pair of glasses Mary's. She doesn't wear glasses.
6.这个城市的天气全年都很舒适。
7.你与同学们相处得如何?
8.据我所知,许多学生喜欢这首歌曲。
补全对话 (共5分, 每空1分)
在下面对话的空白处填入适当的话语(话语可以是句子、短语或词)，使对话完整。
A: Hello. 1. ?
B: Hello.Speaking!
A: Hey, Tom! It's Clark. 2. ?
B: I'm watching TV. What's up?
A: Um… I have two movie tickets on Saturday night. 3. ?
B: Good idea. Is the cinema far from us?
A: 4. . It is only about one kilometer away
B: 5. ?
A: My father will give us a ride.
B: So nice. That's a deal. See you then.
A: See you.
