见于睡行症的是
A．正常睡眠波B．发生于眼快动睡眠第三和第四期C．眼快动睡眠相对增加D．睡眠时出现呼吸暂停发作E．发生在梦中
参考答案：B
痢疾可通过食入不洁食物而感染，属（）
A.呼吸道感染
B.消化道感染
C.创伤感染
D.接触感染
E.节肢动物叮咬感染
—_______ we eat in the classroom?
—No, _______. [ ]
A. Can, we can't
B. Can, you can't
C. Do, you didn't
D. Do, they can't
