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It was Amy’s eleventh birthday yesterday. There was a birthday party in the evening. Her mother cooked delicious food and made a big birthday cake. Her grandparents bought her a new bike. Her father gave her a football. Her friends came to her house for the party. They sang, danced and played many games. At 8:00, they cut and ate the birthday cake. How happy they were!
1．Amy had a birthday party yesterday evening.2．She is twelve now.
3．Amy’s mother bought her a big birthday cake.
4．Amy got a new bike and a football.
5．Amy’s family and her friends were all very happy.
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
