Why not give a nice gift         _ her?[ ]

A. for            

B. to              

C. with

可呈"哑铃"状生长的纵隔肿瘤是

A．胸腺瘤
B．气管囊肿
C．心包囊肿
D．畸胎瘤
E．神经源肿瘤