电子数据交换(EDI)是通过电子方式，采用标准化的格式，利用计算机网络进行结构化数据的传输和交换。()
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该药盒的阳性似然比为
A. 80%.
B. 70%.
C. 40%.
D. 98%.
E. 8
Pale is cited as an example in the second paragraph to illustrate that（）
A. famous soccer players live in slum areas
B. people in poor areas are born with some unique quality
C. children in poor areas start playing football at the age of 3 or 4
D. many great soccer players come from poor areas
相传我国古代大诗人自居易每次作诗后，都会读给一位目不识丁的老太太听。白居易这样做的目的是（）。
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