函数的定义域是()。
A.(0,5]
B.(1,5]
C.(1,5)
D.(1,+∞)
参考答案:B
菱形、矩形、正方形既是中心对称图形,又是轴对称图形,它们的对称轴的条数依次是[ ]
A.1,1,1
B.2,2,2
C.2,2,4
D.4,2,4
---By the way, how many of us can attend the meeting?
---The number of the students to attend the meeting _____ fifty.
A.is
B.has
C.are
D.have