_______ with so much trouble，we failed to complete the task on time.

A．Faced

B．Face

C．Facing

D．To face.

诊断肺结核最可靠的依据是()

A．结核病接触史

B．结核菌素试验阳性

C．血液中淋巴细胞增多

D．低热，盗汗

E．痰结核菌阳性