T₃抑制试验，下列哪些情况是禁忌的（）。

A.年老

B.冠状动脉粥样硬化性心脏病

C.甲亢性心脏病

D.单纯性甲状腺肿

E.严重甲亢

Could you please tell me ______?[ ]

A. how could I get to the airport

B. how could I get to the airport

C. how can I get to the airport

D. how I can get to the airport