题目

If we can ___ our present difficulties,then everything should be all right. A.come across                                                         B.get over C.come over                                                           D.get off 答案：B 解析: get over意为“克服”。根据其宾语our present difficulties可判断出能够克服目前的困难。come across 意为“来到,偶遇”；come over 意为“过来,抓住”；get off 意为“下来,脱下,出发,动身,开始”。（2005•广州）如图，点A、B、C在直线l上，则图中共有    条线段．