下列事件与隋文帝有关的是
①统一南北②改革制度，发展生产，注重吏治③开通大运河④科举制度的诞生[ ]
A．①②
B．②③
C．②④
D．①④
A
— Jack, this is the third time that you have been late this week.
— Sorry, sir, but I was _____ for 15 minutes on the way. [ ]
A. held up
B. put up
C. taken up
D. given up
临床痉挛的益处是（）
A.降低发生深静脉血栓的危险性
B.髋内收肌剪刀样痉挛影响站立平衡稳定
C.增加骨折的危险
D.持续屈肌痉挛增加疼痛
E.自发性痉挛导致睡眠障碍
