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Mary’s shopping list(购物单) | ||
Things | How much/ How many | Price(价格)总价 |
chicken | half a kilo | 10 yuan |
bun | two | 2 yuan |
orange juice | three bottles | 9 yuan |
cabbage | one | 4 yuan |
apple | seven | 14 yuan |
2．Two buns are four yuan.
3．A bottle of orange juice is three yuan.
4．Four apples are seven yuan.
5．Mary spends(花费) 38 yuan in all(全部).
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
