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Yesterday was Sunday. I went to the park with my friends. We were very happy.
First, we played football together. I fell over. But I didn’t hurt. After an hour, we were thirsty. And we bought some ice creams. After we ate them, we went for a bike ride. We were very fast. My friend Lin Feng fell off my bike. He bumped his head.
1．Yesterday was Saturday.2．I didn’t go to the park yesterday.
3．We played football.
4．We bought some drinks.
5．I fell off my bike.
6．Lin Feng bumped his head.
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
