题目

－Do you have Nokia E72 mobile?－Sorry, they have been ________. You may come next week.A．given outB．looked outC．sold outD．come out 答案：C解析:略物流公司为超市送大米，上午送了4次，每次送4.5吨，下午送了6次，共送去大米19吨，物流公司平均每次送大米多少吨？