A．Fifty percent higher than that of the non-students of the same age.
B．One-quarter of that of the non-students of the same age.
C．Half million.
D．Less than that in the past.

A.Fifty
B.
B．One-quarter
C.
C．Half
D.
D．Less

【参考答案】

A
解析：What is the number of the students who commit suicide?