横行穿经腮腺的血管神经有（）、（）、（）。
参考答案：上颌动静脉；面横动静脉；面神经
We’d better _________ when he is thinking, as he prefers to solve problems on his own.
A．wake him up
B．set him aside
C．leave him alone
D．ring him up
公安部和县级以上地方各级人民政府公安机关建立的督察机构，由公安人员组成。( )
