Ideally         _ for Broadway theatres and Fifth Avenue, the New York Park Hotel  is a favourite with

many guests.    [ ]

A. locating      

B. being located      

C. having been located      

D. located

能说明病毒在细胞中生长的最直接指标是（）

A.pH改变

B.红细胞吸附

C.细胞病变

D.干扰现象

E.蚀斑