将患者外耳道内真菌病痂皮或菌苔取出，经（）处理后，可于显微镜下查见菌丝和孢子。
参考答案：10％氢氧化钠(钾)
—How does Jack usually go to work?
--He ___ drive car, but now he ___ there to lose weight.
A．used to; is used to walk
B．was used to; is used to walking
C．was used to; is used to walking
D．used to; is used to walking
3岁小儿，钡灌肠发现直肠局限性狭窄，近端肠管明显扩张。
诊断应考虑为（）
A.先天性肛门闭锁
B.急性肠套叠
C.乙状结肠扭转
D.直肠癌
E.先天性巨结肠
