铸造侧腭杆与余留牙的关系应为
A．离开余留牙2cm
B．与余留牙接触
C．离开余留牙4～6cm
D．离开余留牙3cm
E．离开余留牙6cm
参考答案：E
They were surrounded by the enemy, but they ________at last from the village.
A．managed escaping
B．tried to escape
C．managed to escape
D．tried escaping
人民警察不得参加任何社会团体和其他组织。( )
