阅读题，请从所给的A-F中选择恰当的选项。（其中有一项多余）

小题1:Jenny is on the playground. It is a P.E. class. But she can not find her baseballs.

小题2:Linda found a schoolbag. Her telephone number is 446-5956.

小题3:Mark lost a dictionary. It is red.

小题4: Lucy found a pen. It’s a nice black pen. It’s in her school now.

小题5:Alan lost his watch. His telephone number is 633-5819. And his e-mail address is alan1201@hot.mail.

A．

B．

C．

D．

E.

F.

治疗B细胞淋巴瘤的靶向药物美罗华（利妥昔单抗），其作用靶点是（）。

A.VEGFR

B.CD20

C.HErR-2

D.CD2

E.EGFR