东汉末年，大将关羽曾被毒箭所伤，当时能为他手术的医生是[ ]

A．扁鹊    

B．华佗   

C．张仲景   

D．李时珍

名校模拟题

1、He is the only one of the students who _______a winner of scholarship for three years.

A．is

B．are

C．have been

D．has been