小额诉讼程序审理的案件,实行()。
参考答案:一审终审
—Is the man in blue our headmaster?
—It _____ be him. He has just left for Beijing. [ ]
A. must
B. may
C. can't
D. couldn't
下面是某学习小组的同学探究“光的反射规律”时,得到下列四组数据:
(2)分析表格中的数据,你得出的光的反射规律是:______.