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John: I’m going to the library this weekend.
Sarah: Oh!
John: Yes, I like to read books about animals.
Sarah: Really? Can I ask you some questions about animals?
John:
Sarah:
John: It’s about 3 metres.
Sarah:
John: It’s about 3 tons.
Sarah: You are so great!
| A．How tall is a giraffe? |
| B．Of course. |
| C．No, thank you. |
| D．What are you going to do this weekend? |
| E．Do you like to read the books about animals? |
| F．How heavy is an elephant? |
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
