题目内容
--- When did you meet your English teacher?
--- While I _________ a bike along Jiaomen River.
A. rode B. was riding C. ride D. will ride
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. |
Choose the best topic from A to F according to the meaning of each paragraph.
1.Latin music is very common in countries where people speak Spanish or Portuguese. This music comes from Mexico, the Caribbean, Central America, and South America.
2.Latin music is a mixture of European music and African music. It has a strong beat. Many years ago, people played Latin music mostly on guitars with drums, but now whole orchestras with lots of other instruments play it.
3.People play Latin music at home or when they visit their friends. Sometimes fans play cards in the afternoon or at night on weekends or holidays while they listen to Latin music. Some people bring guitars and play them when they sing. They listen to the music while they eat.
4.People who dance enjoy Latin music because it is easy to dance to. The beat is very strong. Dancers can move their whole bodies. They can dance on their own or with someone.
5.Other people enjoy listening to Latin music. Usually the words are in Spanish or Portuguese, but sometimes they are in English or another language. Many Latin songs have beautiful words, but if a person doesn't understand them, it's not important. A person can still enjoy the music. The sound is international.
A. People dance to Latin music. B. The instruments people play Latin music with. C. Latin music is international. D. Kinds of Latin music. E. The places Latin music comes from. F When to play and listen to Latin music. |