医院感染可以发生在（）
A.门诊病人
B.住院病人
C.医务人员
D.探视者
E.陪护人员
参考答案：A, B, C, D, E
Her little son fell off the boat into the water due to her carelessness. The mother couldn’t help _____because she couldn’t help _____ her son out of the danger.
A．crying; to save
B．crying; saving
C．to cry; to save
D．cry; saving
