计算题：某面点间制作奶黄色，用面粉500克做了25个皮子，用200克奶黄馅做了15个馅心，已知面粉进价为3元/千克，奶黄馅进价为7.8/千克，若按其销售毛利率68%计算，求其单位售价。
参考答案：
解：奶黄包的单位成本＝皮坯单位成本＋馅心单位成本
奶黄包单位售价＝单位成本/（1－销售毛利率）＝0.16/（1－68%）＝0.5元答：奶黄包的单位售价为0.5元。＝3×0.5/25＋7.8×0.2/15＝0.06＋0.1＝0.16元
| 情景交际。选择方框中的句子完成对话，其中有两项多余。 | |
| He Jing: What do you often do in your spare time? Wei Han: __1__ He Jing: It's great! But I can't play the piano. I can play the guitar. Wei Han: __2__ He Jing: I like pop music. What about you? Wei Han: I also like it. __3__ I like folk music best. I'm Tenger's fan. I like singing all of his songs. He Jing: I know little about folk music, but I enjoy listening to Song Zuying's songs. Wei Han: __4__ He Jing: Yes, I like them. My favorite English song is Yesterday once More. Wei Han: __5__ But I prefer Take Me to Your Heart.
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