题目

一款新型的太阳能热水器进价2000元，标价3000元，若商场要求以利润率不低于5%的售价打折出售，则设销售员出售此商品最低可打x折，由题意列方程，得（） A . B . C . D . 答案：D —Robert is indeed a wise man. —Oh,yes.How often I have regretted_____his advice! A.to take                                                         B.taking C.not to take                                                    D.not taking