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Ben: Wow!
Mary: Thanks! Look! That is my classroom.
Ben:
Mary: Fifty.
Ben:
Mary: No, it isn't. It is the library.
Ben: Where is the teachers' office?
Mary:
Ben: What time is it now?
Mary:
Ben: OK.
| A．Ten o'clock. Let's go to the playground. |
| B．Is that a computer room? |
| C．Your school is so big! |
| D．It's on the second floor. |
| E．How many students are there in your class? |
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
