题目

--Have you got any idea for the summer vacation?      --I don't mind where we go ____ there's sun, sea and beach. A. as if            B. as long as           C. now what          D. in order to 答案：B如图，一块等边三角形的木板，边长为1cm，现将三角板沿水平线翻滚，那么B点从开始到结束所走路径长度为    cm．