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Mark: Hi! It's 4 o’clock. School is over. Let’s go to the playground.
Tom: OK. Let's play football.
Mr Zhang: Time to go home, kids.
Mark. What time is it now?
Tom: It's 6 o'clock. It's time for dinner.
Mark: Oh! Let’s go!
1．School is over at ____________ o'clock. ( )
| A．four | B．three | C．five |
| A．teachers' office | B．gym | C．playground |
| A．dinner | B．lunch | C．breakfast |
—It's ____________ o'clock.
| A．three | B．six | C．seven |
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
