腭裂术后何时开始进行语音矫治（）。
A.1～2周
B.3～4周
C.6～8周
D.3～6月
E.12个月
参考答案：B
Few people seem to care about what a super star _____ before he/she became famous.
A．goes through
B．is going through
C．have gone through
D．had gone through
关于心脏后负荷，下面哪项叙述是错误的______
A．高血压可导致左室后负荷增加B．指心脏收缩时所遇到的负荷C．又称压力负荷D．肺动脉高压可导致右室后负荷增加E．决定心肌收缩的初长度
