关于分子生物学诊断方法在流行病学研究中的描述，错误的是（）

A.判断传染病流行是单株还是多株感染

B.有助于识别可能的传播宿主及途径

C.识别高毒株，追踪难以培养的传染因子

D.鉴定新的微生物

E.查找传染源

Passage One

Using the program developed at the University of California at Berkeley, the papers are checked by ______.

A．printing and looking carefully at the hundreds of papers on the internet

B．searching many web pages and comparing words used

C．asking the students where they got the information in the paper

D．comparing all the papers which are turned in by the students