全口义齿基托边缘不能伸展的区域是
A．远中颊角区 B．下颌牙槽嵴 C．后堤区 D．下颌舌骨嵴 E．上颌牙槽嵴
参考答案：A
Nancy ____________ to ____________ an English teacher. [ ]
A. want, is
B. want, to
C. wants, is
D. wants, be
证券交易佣金全部是证券经纪商的业务收入。( )
