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1. What did you do last night?
| A．你收到你祖父母的礼物了吗？ 2. I bought some vegetables for my grandma. | B．波利吃了一些蔬菜。 3. Where did you go yesterday? | C．我为我的祖母买了一些蔬菜。 4. Polly had some vegetables. | D．昨天晚上你干什么了？ 5. Did you get your grandparents' present? | E．你昨天去哪儿了？ |
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
