HIV感染的确诊试验是()
A.ELISA
B.IFA
C.RIA
D.Westernblot
E.RIP
参考答案:D
—Zhang Yining won the l00th gold at the Olympic for China. _______ is she from?
—Beijing. [ ]
A. Who
B. What
C. Where
D. When
“雅丹”源于______语,意为“有陡壁的小丘”。