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One Sunday morning, my mother and I are in a fruit shop. I like fruit very much, so I want to buy some fruits.
There are a lot of fresh (新鲜的) fruits in the shop. Look, the watermelons are green and big. The bananas are yellow and nice. And the peaches are pink and sweet!I like pears best, so my mother buys three kilos of pears for me. And we also buy two kilos of oranges for my father and three kilos of grapes for my sister.
We are very happy.
1．There are a lot of2．We buy three
3．Totally (一共), we buy
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
