Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, ______ the

number of people infected with the virus is going up sharply. [ ]

A. when          

B. which          

C. that        

D. where

符合巨幼细胞贫血实验室检查的是（）

A.MCV>100fl，MCHC<32％

B.重者全血细胞减少

C.网织红细胞减少

D.血片中见红细胞中心淡染呈靶形

E.中性粒细胞分叶少