Ig可变区的生物学功能是()

A．提呈抗原

B．细胞毒作用

C．调理作用

D．识别并特异性结合抗原

E．参与T细胞在胸腺内的分化

We tried to ____ his doubts and let him tell the truth.

A．review

B．remove

C．view

D．rebuild