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It is fun to give friends something on their birthdays. Tim and Bob like to give each other funny things. On Bob’s birthday, Tim gives him a pair of shoes with peanuts (花生) in them. Bob says, “I want to give Tim something funny too.”
When Tim’s birthday comes, Bob gives him a big box. Tim opens it. In the box, there is a saving pot (存钱罐) that looks like a duck. The duck has a hat on its head. It is so funny. Tim and Bob both laugh.
1．It’s fun to send presents on someone s birthday.2．Tim and Bob are good friends.
3．Tim and Bob like to give each other funny things as birthday presents.
4．On Bob’s birthday, Tim gives him a pair of shoes with peanuts in them.
5．On Tim’s birthday, Bob gives him a duck.
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
