临床上活动矫治器所使用的改良式箭头卡环的直径是()
A.0.5mm
B.0.8mm
C.0.9mm
D.1.0mm
E.1.2mm
参考答案:B
某体育用品商场预测某品牌运动鞋能够畅销,就用32000元购进了一批这种运动鞋,上市后很快脱销,商场又用68000元购进第二批这种运动鞋,所购数量是第一批购进数量的2倍,但每双进价多了10元.
(1)该商场第一次购进这种运动鞋多少双?
(2)如果这两批运动鞋每双的售价相同,且全部售完后总利润率不低于20%,那么每双售价至少是多少元?
第1篇 Food for Learning
With the Food for Learning program, women get a large package of food as long as ______.
A.they attend free literacy classes every day
B.they have no land of their own
C.they bring up their families on their own
D.they live in refugee camps