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It’s summer. It’s hot. The sun is shining. Alice, Ben and I are in the park. Ben is playing with his dog, Mark. Alice has a nice kite. It’s blue and orange. And she likes to fly the kite. Look! She’s happy. There are many flowers in the garden. I can smell the flowers. They are nice. The sky is blue. What a nice day!
1．It’s cold in winter now. （2．Alice is playing with the dog. （
3．Mark is flying the kite. （
4．I can see many flowers in the park. （
5．Today is a nice day. （
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
