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made from clay must be fired, or hardened, in kilns. Certain kinds of coal and wood must be kiln-dried before they can be used. Hobbyists use small kilns to fire a variety of ceramic （陶瓷）objects.
There are two main types of kilns. A periodic kiln, used to fire certain kinds of delicate china, is raised to a high temperature and then completely cooled before its contents are removed. A continuous, or tunnel kiln contains several chambers, or zones, which heat, bake, and cool a product. Stacks of clay bricks move through a tunnel kiln on tracks. 3 Gas, oil, and coal are all used to heat modern kilns. 4 But for special jobs, where cleanliness and careful heat are important, kilns must be heated by electricity oven though it is more expensive. Small kilns used in the home or in craft shops are also heated electrically because electricity is clean and convenient.
5 When ancient people discovered that heat hardened some materials, they were able to make durable household objects such as jugs and bowls. Today our museums display many kinds of ancient statues and art objects that have lasted because they had been kiln-dried. They come from lands as far apart as China and Greece.
A.Its temperature may vary.
B.Then they come out, hardened, and cooled. C.Kilns are used in industry and in craft-making. D.Kilns have been in use for thousands of years.
E.An electric kiln is a heating chamber used to transform materials. F.Most manufacturers use whichever material is cheapest in their area.
G.Clay, when heated properly, becomes hard enough to form bowls and plates.
书面表达
22 假设你是红星中学学生会主席李华。来自美国姊妹校的部分学生将于下周五访问你校请你用英文准备一份欢迎词。内容包括： 1. 表示欢迎；
2. 说明当天的安排；
1）观摩并体验太极拳（Tai Chi） 2）游览一处北京名胜。 注意：1.字数不少于50；
2.开头和结尾已给出，不计入总词数。 Dear Friends, 23
假设你是红星中学高三学生李华。请根据以下四幅图的先后顺序，用英文给校刊写一篇短文，记述你上周末你和家人参加社区义务劳动的全过程。 注意：词数不少于60。
提示词：垃圾夹 trash grabber
答案：
单选：1-5bdadb 6-10aabac 11-15dcbbd
完形填空：1-5acdbd 6-10aaccb 11-15abdcd 16-20adbbc
阅读理解：A篇cba B篇dcba C篇abda D篇bcdd 七选五 1-5acbfd 书面表达：
Dear friends,
We are very excited to have you here and on behalf of my school, I extend our most sincere welcome to you. Here is today's arrangement, which, I hope, would make your day both delightful and rewarding.
As scheduled, you will first watch a Tai Chi show by some teachers of our school. Later, if you are interested, you can try learning to play Tai Chi, which enjoys great popularity across China.
In the afternoon, the school bus will drive you to the Forbidden City, a must-see attraction especially for those who come to Beijing for the first time. You will be amazed at the architectural style and masterpieces and treasures well preserved there.
Once again, I hope that you will enjoy your day! Thank you very much!
Last Friday, when I came back home from school, a notice at the entrance to my building caught my eye. It called on people to take part in the voluntary work on the following Sunday. The notice aroused my great interest, urging me to share it with my family immediately.
After supper, we talked about what we could do for the voluntary opportunity. We agreed on picking up the trash and then we started making trash grabbers. By tying the bamboo pieces together, we made several trash grabbers.
Then came the big voluntary day! Carrying those trash grabbers, we went downstairs and was amazed that some people had already started their job. Some were sweeping the ground while some were cleaning the benches. Without any delay, we joined them. Everyone redoubled their efforts in the cleaning.
That evening, I peened this voluntary opportunity on my diary, as this experience made me feel the joy of labor. It certainly is worth the active participation.
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