与颈动脉搏动一致的点头运动见于（）
A．三尖瓣关闭不全
B．二尖瓣狭窄
C．主动脉瓣关闭不全
D．主动脉瓣狭窄
E．室间隔缺损
参考答案：C
—What's your plan this weekend? —I plan the novel. [ ]
A. to finish reading
B. finishing reading
C. to finish to read
D. finishing to read
职业道德的核心是（）。
A.爱岗
B.敬业
C.奉献社会
D.孝敬父母
