临床见恶心、呕吐呃逆、嗳气等症频作，其病机是
A．痰浊上壅
B．肺气上逆
C．肝气上逆
D．胃气上逆
E．奔豚气逆
参考答案：D
Someone ____ my umbrella! It is all wet. And it was wet yesterday and the day before yesterday. [ ]
A. has used
B. has been using
C. used
D. is using
溃疡性结肠炎所致腹泻特点为()。
A．大便多呈糊状．混有黏液、脓血，里急后重常见
B．大便多呈糊状，质稀薄，色鲜红，不伴里急后重感
C．大便不成形，柏油样便
D．米泔水样便，伴里急后重
E．白陶土样便，不伴里急后重
