患者男性,28岁,检查发现气管向左侧移位,右侧胸廓饱满,触觉语颤减弱,叩诊浊音,考虑最可能的原因是
A.肺气肿 B.气胸C.胸腔积液 D.肺炎E.肺脓肿
参考答案:C
先化简,再求值:已知x=2,求代数式(x+1)(x-1)-x(2x-3)的值.
—Nick, ____ you ____ my book?
—Sorry, I came here just now . [ ]
A. have, seen
B. did, see
C. has, seen
D. do, see