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原文: The car race. There is a car race near our town every year. In 1995 ,there was a very big race. There were hundreds people there. My wife and I we 阅读全文
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原文: The weekend. A:Hello , were you an tht butcher's? B:Yes I was. A:Were you at the butcher's too? C:No I wasn't. I was at the greengrocer‘s. A:How's 阅读全文
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原文: Not a baby. A:What are you going to do this evening Jill? B:I'm going to meet some friends, dad. A:You mustn't come home late. You must be home at 阅读全文
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原文: Thank you docter. A:How's Jim today? B:Better, thank you docter. A:Can I see him ,please? B:Certainy docter, come upstairs. A:You look very well , 阅读全文
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原文: A bad cold。 A:Where is Jim? B:He is in bed. A:What's the matter with him? B:He fells ill. A:He looks ill. B: We must call the docter. A:Yes,we mus 阅读全文
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作用: 使用泛型可以实现算法重用。 泛型约束: Myclass<T> where T : struct 必须值类型 / :class 必须引用类型 多个: Myclass<T,K,W,R,P> where T: struct where K :class where W : 接口 必须实现某个接口 阅读全文