．Soon children in the camp had many new friends, ________ they shared food, stories, and projects.

A．for which

B．with whom

C．of which

D．to whom

某患儿胸腺先天性缺失，与正常儿童相比，该患儿（）

A．仍有部分细胞免疫功能

B．仍有部分体液免疫功能

C．体内的B淋巴细胞数目显著减少

D．体内的T淋巴细胞数目增加