伤寒患者最具有特征性的病理改变部位是在
A.回肠末端
B.升结肠
C.乙状结肠
D.肝.脾
E.心.脑
参考答案:A
一旦发现有人触电,应立即采取把触电者送往医院抢救措施。
We _______ to paint the whole house but finished only the front part that day.
A.set about
B.set up
C.set out
D.set down