治疗台的消毒属于
A．个人防护B．无菌术C．表面消毒D．器械消毒E．废物处理
参考答案：C
More and more people in Beijing can talk and write _______ English. [ ]
A. for
B. with
C. in
D. to
简要回答二战后国际贸易发展的主要特点？
