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Su Hai: Great! Let’s go.
Su Yang: Wow! How beautiful! Look! Some ducks are swimming on the lake.
Su Hai: They are lovely! I like the trees near the lake.
Yang Ling: There are so many beautiful flowers. They are red, yellow, orange and blue. Can you draw them?
Su Hai & Su Yang: Sure, it’s easy.
1．Yang Ling, Su Hai and Su Yang are in the zoo.
2．Some ducks are swimming on the lake.
3．There are some trees near the lake.
4．Su Hai can draw the flowers, but Su Yang can’t.
5．The park is beautiful.
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
