题目

．The middle-aged man said he would accept the job, so we have asked him to __________ his acceptance in writing.        A. confirm                   B. convey                     C. convince                  D. consider 答案：A 某文具店一支铅笔的售价为1.2元，一支圆珠笔的售价为2元．该店在“6•1儿童节”举行文具优惠售卖活动，铅笔按原价打8折出售，圆珠笔按原价打9折出售，结果两种笔共卖出60支，共卖得金额87元．若设铅笔卖出x支，则依题意可列出的一元一次方程为（　   ）．  A．1.2×0.8x+2×0.9（60+x）=87        B．1.2×0.8x+2×0.9（60﹣x）=87  C．2×0.9x+1.2×0.8（60+x）=87        D． 2×0.9x+1.2×0.8（60﹣x）=87