—______ you in America in 1999?

—Yes, I ____________.

A．Were, were

B．Was, were

C．Were, was

D．Was, was

女性，35岁，颈前区肿块10年，近年来易出现出汗、心悸，渐感呼吸困难。体检：晨起心率104/分，BP120/60mmHg；无突眼，甲状腺Ⅲ度肿大，结节状，心电图示：窦性心率不齐。

确诊主要依据（）

A.颈部CT

B.血T3，T4值

C.甲状腺B超

D.颈部X线检查

E.MRI