一般说来，电话铃声响（）声之前拿起电话。
A.1
B.3
C.6
D.9
参考答案：B
Mr. Zhang once taught in a remote village in Anhui province as a volunteer, which was ______ only on foot.
A．acceptable
B．accessible
C．available
D．appropriate
医师在执业活动中遵守法律规定和技术操作规范是( )
A．医师的社会地位B．医师的执业条件C．医师的职责D．医师的权利E．医师的义务
