Directions: The question below is followed by six choices numbered 260-265. If a choice is correct, mark A in the space provided. If a choice is not correct, mark B. Blacken one circle on your answer sheet for each number.
The nurse is explaining the Bill of Rights for psychiatric patients to a client who has voluntarily sought admission to an inpatient psychiatric facility. Which of the following rights should the nurse include in the discussion

Right to personal mail.

依据上海警察局档案，1919年5月，上海许多学生家长都收到同样一份由上海华童公学校长发出的通知（见下图）。引发这种现象的原因可能是

A．五四运动

B．北伐战争

C．九一八事变

D．七七事变爆发