根据短文内容及首字母提示, 补全空格内单词，使短文完整、通顺。

Today is Sunday. It’s the first d 小题1: of the week. Uncle Li goes to buy some v 小题2:    and meat in the market. He has a s 小题3:   basket in his hand. He buys some potatoes. They are very

c 小题4:  . He wants to buy some beef, but they are too expensive. He doesn’t have e  小题5:  money. So he c 小题6: his plan. He goes to the bookshop nearby and r 小题7:  books for an hour. T 小题8: he goes back home w 小题9:  the potatoes and the books. He looks very h 小题10:  . What a fine day!

现需设计400号钢筋水泥混凝土配合比，该混凝土系作路面。施工采用机器振捣、坍落度为3cm，材料试验结果如下：

水泥：525号普通水泥，相对密度3.1，安定性合格

砂：中砂、级配合格、其他条件均合格

石子：碎石，最大粒径40mm，其他条件均合格

水：自来水

A与B经验系数表

每1立方米混凝土的用水量参考值

混凝土砂率参考值

混凝土配合比设计步骤：

计算配合比。