— _____ the boy _____ the second picture? 

— He's my cousin, Peter. [ ]

A. Who's, in

B. Who's, of

C. What's, on

D. What's, for

变应性亚败血症与败血症的鉴别点有（）

A.白细胞与中性粒细胞降低

B.血培养阴性

C.发热高、时间长，无毒血症状

D.抗菌药物无效

E.皮疹短暂，反复出现