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1．—Hurry up, Mike. It’s 7 o’clock. Time to go to school. （
—OK, Mum.
2．—Excuse me. What time is it? （
—It’s three o’clock.
3．—OK, children. It’s 4 o’clock. It’s time to go home. （
—Let’s go! Bye, Mr Jones!
4．—What time is it, Amy? （
—Oh no! It’s 11 o’clock. It’s time for music class.
—Hurry up! Let’s go!
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
