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 It's Sunday today. It's sunny. I go to the zoo with my father. | |  The monkeys are climbing up and down. A little monkey is sitting on the top of the hill. It's eating bananas. |
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 The birds are singing. A parrot is saying “Hello! " | |  The elephants are drinking water. |
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 The pandas are black and white. They are very fat. I'm taking pictures of them. | | |
1．I go to the park on Sunday. （
2．A little monkey is eating bananas. （
3．A parrot is singing. （
4．The elephants are drinking water. （
5．I'm taking pictures of the cute pandas. （
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
