The man wrote a book_____    his late wife.[      ]

A. in charge of    

B. in favour of

C. in memory of    

D. in search of

患婴非特异性免疫功能低下的可能原因是（）

A.皮肤表面脂肪少

B.黏膜较干燥

C.单核细胞杀菌功能低于成人

D.白介素2低下

E.γ-干扰素低下