抗原递呈功能最为强大的细胞是（）
A.巨噬细胞
B.树突状细胞
C.B淋巴细胞
D.T淋巴细胞
E.肿瘤细胞
参考答案：B
The best method to _____ the goal of helping the patients with AIDS is to unite as many sympathetic people as possible.
A．complete
B．command
C．accomplish
D．accompany
什么心理不利于社会交往？
