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【单选题】
下列茶中属于乌龙茶的是( )A.
西湖龙井
B.
湖南君山银针
C.
云南普洱茶
D.
安溪铁观音
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反馈参考答案：
举一反三
【单选题】Carlo: How much is it for a person for a day? Ben: With lunch, its only 60 Euros. Carlo: Ok, ______.
A.
it' s too expensive
B.
it' s a deal
C.
forget it
D.
goodbye
【简答题】课本P117页练习题第2小题
【简答题】设二维随机变量(X，Y)的联合分布函数为 求常数A，B，C．设二维随机变量(X,Y)的联合分布函数为F(X,Y)=A(B+arctanX)(C+arcY).求 (1)常数A,B,C (2)关于X,Y的边缘分布函数
【判断题】(PartB)Ben could only lie on his back day and night whereas Jack could sit up and walk about for a brief period every day.
A.
正确
B.
错误
【判断题】Ben could only lie on his back day and night whereas Jack could sit up and walk about for a brief period every day.
A.
正确
B.
错误
【简答题】Ben could only lie on his back day and night whereas Jack could sit up and walk about for a brief peiod every day
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