A:that Alice was i
B:if was Alice i
C:if Alice was i
D:whether was Alice i
Most of the students in our city go to school by ______ baik.
学生每天在学校约5____.
m是13的整数部分,n是13的小数部分,求(m﹣n)2的值
对下列光学现象解释正确的是( )