下列各式中，积最小的是[ ]
A．0.51×204
B．5.1×2.04
C．0.051×2040
答案：B
当今世界三大宗教中，起源于古代印度的宗教是[ ]
A、基督教
B、佛教
C、伊斯兰教
D、道教
When we first met on a train in 2000, we both felt immediately that we _____each other for years.
A．know
B．had known
C．know
D．have known
