下列尺寸最有可能是托幼建筑楼梯踏步宽度的是()。
A.350mm
B.320mm
C.300mm
D.280mm
参考答案:D
肺气肿病变部位叩诊音呈
A.先天性发绀型心脏病B.心绞痛C.胆道蛔虫症D.急性腹膜炎E.一侧胸腔大量积液
Do you think that Mr Smith is a _______ person? [ ]
A. happily
B. quickly
C. slowly
D. friendly