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听力原文:M: What are you doing? W: I'm ordering some filing cabinets out of a catalog. M: What do you need them for? W: There's so much stuff piling up in my dormitory room. If I don't do something soon, I won't be able to move in there. M: Do you usually order from a catalog? W: Sometimes. Why? M: Oh, it's just in the history class today we were talking about how the catalog sales business first got started in the US. A Chicago retailer, Montgomery Ward started it in the late 1800s. It was really popular among farmers. It was difficult for them to make it to the big city stores so they ordered from catalogs. W: Was Ward the only one in the business? M: At first, but another person named Richard Sears started his own catalog after he heard how much money Ward was making. W: What made them so popular? M: Farmers trusted Ward and Sears for one thing. They delivered the products the farmers paid for and even refunded the price of things the farmers weren't satisfied with. The catalog became so popular that some country school teachers even used them as textbooks. W: Textbooks? M: Yeah, students practice spelling the names and adding up the prices of things in the catalogs. W: Was everybody happy about it? M: That's doubtful. It was said they drove some small store owners out of business. Sears and Ward sold stuff in such large quantities that they were able to undercut the prices at some small family owned stores. (27)
A.
The necessity to keep everything in place.
B.
Catalogs used as textbooks by country school teachers.
C.
Sears and Ward and catalog sale business.
D.
The competition between small stores and catalog sale.
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举一反三
【判断题】一个原子中的电子吸收了具有特定能量的光子后可以从高能级跃迁到低能级。
A.
正确
B.
错误
【单选题】处理新生儿生理性黄疸最常用的方法是:
A.
使用白蛋白
B.
使用血浆
C.
光照治疗
D.
使用能量合剂
E.
可提早喂奶
【判断题】光子从高能级跃迁到低能级吸收能量。(  )
A.
正确
B.
错误
【单选题】爱因斯坦指出光与物质有三种相互作用,( )是指在外来光子激励下,电子吸收外来光子能量,从低能级跃迁到高能级,变成自由电子。
A.
受激辐射
B.
受激吸收
C.
自发辐射
D.
自发吸收
【简答题】三、阅读理解(30分) On New Year’s Eve At midnight on New Year’s Eve, people in Rome, Italy, throw out all the things they no longer want. The streets are filled with old chairs, beds, clothes and dishes. In M...
【单选题】On New Year's Eve, there will be a firework _____ at People's Square.
A.
display
B.
performance
C.
show
D.
exhibition
【单选题】处于激发态的原子,受适当能量的外来光子诱发,会从高能级跃迁到低能级,同时发射光子,这称为
A.
受激辐射
B.
受激吸收
C.
自发辐射
D.
激光辐射
【单选题】On New Year's Eve, there will be a firework ______ at People's Square.
A.
performance
B.
display
C.
show
D.
exhibition
【单选题】处于激发态的原子,受适当能量的外来光子诱发,会从高能级跃迁到低能级,同时发射光子,这称为
A.
受激吸收
B.
自发辐射
C.
受激辐射
D.
激光辐射
【单选题】处理新生儿生理性黄疸最常用的方法是:
A.
使用白蛋白
B.
使用血浆
C.
光照治疗
D.
使用能量合剂
E.
以上都不是
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