试题 试卷
题型：单选题 题类：常考题 难易度：普通
—Sorry, I don't know.
—Sorry. I couldn't remember .
—In 1818.
I am not sure {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} out this difficult maths problem in ten minutes.
—Yes, it was interesting but kind of difficult.
试题篮
