名言名句“变者，天下之公理也”出自于 [ ]
A．梁启超
B．谭嗣同
C．孙中山
D．陈独秀
答案：A
Someone is ringing the doorbell . Go and see ____________.
A．who he is
B．who is he
C．who is it
D．who it is
下列一组数中，最小的数是（）
A、（11011001）2
B、（3A.16
C、（37）8
D、（36）10
