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Today is Sunday. I go to a shop by bike. I want to buy some gifts for my friends. I want to buy a new bag for Betty. Her bag is old. I want to buy a red toy for John. His favourite colour is red. I want to buy yellow socks for Kitty. And I want to buy a white cap for Jack. He likes caps.
1．I go to a park by bike on Sunday.2．I want to buy some gifts for my friends.
3．Betty’s bag is old.
4．John’s favourite colour is white.
5．I want to buy white socks for Kitty.
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
