题目

— I can’t find my new dictionary.      — Is the one on Gary’s desk           ?A．ours B．yoursC．hisD．mine 答案：B解析:略如图，坡角为30°的斜坡上两树间的水平距离AC为2m，则两树间的坡面距离AB为（ ）A．4mB．C．mD．m