题目

. That light rail transit line(轻轨), __  _in July 2009 and ___ in 2012, will be China’s longest light rail transit line in history.     A. starting, completing             B. started, to be completed C. to start, completed               D. starting, completed 答案：B☆△□○☆△□○☆△□○…按这样的规律继续排下去，第100个图形是 ．