【題目】 Marie wants to make three sandwiches for her family in the evening. But there is only enough cheese and 4 pieces of bread in her house. A sandwich needs two pieces of bread, 0.1 kilos of lettuce and 0.5 kilos of chicken. Then how much she should spend at least in the supermarket in order to make their dinner?

Bread

Lettuce

Chicken

Cheese

$ 0.5/piece

$ 2/kilo

$ 4/kilo

$ 5/bag

A.$ 7.6B.$ 8.2C.$ 3.2

【答案】A

【解析】

瑪麗想在晚上為她的家人做三個(gè)三明治。但她家只有足夠的奶酪和4片面包。一個(gè)三明治需要兩片面包，0.1公斤生菜和0.5公斤雞肉。那么她至少應(yīng)該在超市花多少錢才能做晚飯呢？

面包

生菜

雞肉

奶酪

$ 0.5/片

$ 2/公斤

$ 4/公斤

$ 5/包

考查計(jì)算。一個(gè)三明治需要兩片面包，0.1公斤生菜和0.5公斤雞肉。根據(jù)題，三個(gè)三明治需要六片面包，0.3公斤生菜和1.5公斤雞肉。她家已經(jīng)有四片面包，還需要買兩片面包，共$1；0.3公斤生菜，共$ 0.6；1.5公斤雞肉，共$ 6。有足夠的奶酪，所以不需要買奶酪。做晚飯總共花$ 7.6。故選A。

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