—You must apologize to Rebecca for being so rude, Sam.

—Why ________ I say sorry? It’s she ________ said insulting words first.

A．should; who

B．must; whom

C．can; that

D．will; who

下列哪项征象提示肺结核并发肺癌可能（）.

A.成年肺结核患者病变侧肺门淋巴结肿大

B.结核治疗中某处病灶好转，而他处病灶增大

C.纤维素条影基础上出现浸润性阴影

D.随访过程中肺内出现直径大于3cm的肿块影

E.原病灶处出现纤维钙化灶