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B: I’m making a birthday cake.
A: Ah! Why?
B:
A: When is your sister’s birthday?
B:
A: That’s fun. It’s Children’s Day.
B: Yes, my sister is four years old. She is cute.
A:
B: She likes toy cats.
A: You can buy a Kitty Cat for her.
B: That’s a good idea.
A: You’re welcome.
| A．It’s on June 1st. |
| B．Thank you. |
| C．What are you doing now? |
| D．Because my sister’s birthday is coming. |
| E．What toys does your sister like best? |
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
