—How did you find your visit to the museum, John?

—_____________.[ ]

A. By taking a No. 3 bus            

B. Oh, wonderful, indeed

C. A classmate of mine showed me the way

D. Very well

患者女性，32岁，怀孕4个月，低热，纳亢。测T240ng/dl，T18μg/dl。

为确诊患者有无甲亢，下列试验何者为首选()

A．甲状腺素结合试验，结合比值

B．甲状腺素结合试验，吸收率

C．甲状腺素结合试验，结合率

D．TRH兴奋试验

E．游离T3，T4测定