Our English teacher ___ our buying a good English-Chinese dictionary.

A．asked

B．introduced

C．suggested

D．required

下述哪项表现是由T₃、T₄分泌增多直接所致（）

A.浸润性突眼

B.甲状腺肿大

C.心率增快

D.胫前黏液性水肿

E.甲状腺血管杂音