舌骨上肌群产生张口运动,舌骨下肌群参与固定舌骨、协助舌骨上肌群张口的作用。()
参考答案:对
I often see Barbara _____ after school. [ ]
A. play the flute
B. play flute
C. playing the flute
D. playing flute
不动产可行性研究的必要内容,具体不包括( )。
A.项目概况
B.风险分析
C.财务评价
D.成本估算