— There used to be many trees in the city. 

— Yes, but there are _______ now. [ ]

A. less

B. few

C. a few

D. fewer

甲状腺功能亢进症最有意义的体征是（）

A.弥漫性甲状腺肿大伴血管杂音

B.心率增快，第1心音亢进

C.浸润性突眼

D.脉压增大，周围血管征阳性

E.双手震颤（+）