DeMusset征是指()
A.明显颈动脉搏动
B.毛细血管搏动征
C.枪击音
D.动脉双重杂音
E.点头运动
参考答案:E
He commanded that the students ______the classroom before he returned.
A.didn’t leave
B.wouldn’t leave
C.not leave
D.couldn’t leave
VIP客户购机盛会活动中目标用户的邀约要提早()天开始预热,最后一天再确认。
A.3
B.5
C.7
D.10