The woman came to see John yesterday is his aunt.
A:who
B:whom
C:whose
D:what
计算:﹣14﹣2﹣(﹣3)2÷(12)3.
当老师的年龄是学生这么大时,学生刚3岁;当学生是老师这么大时,老师39岁.老师今年( )岁.