设α为非零实数,函数的反函数是()
A.选项A
B.选项B
C.选项C
D.选项D
参考答案:D
The work is too hard for him. He _______ finish it on time.[ ]
A. can't
B. mustn't
C. shouldn't
D. needn't
以下不属于桃园三结义的人物是()
A.赵云
B.关羽
C.张飞
D.刘备