She looked around, but the tall man was nowhere______.

A．to see

B．to be seeing

C．to be seen

D．seen

此患者最常见的首发症状为

A．无痛性颈部及锁骨上淋巴结肿大
B．持续性或周期性发热
C．局部或全身皮肤瘙痒
D．脾肿大
E．贫血