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( ) 1. Where is Liu Tao? A Good morning, class.
( ) 2. Is that your school bag? B No, it isn’t.
( ) 3. Don’t sleep. C How beautiful!
( ) 4. Look! A bird! D He’s here.
( ) 5. Good morning, Mr Green. E I’m sorry.
( ) 6. Hi,I’m Tom.. F Thank you.
( ) 7. Sit down,class. G It’s over there.
( ) 8. What’s this? H It’s a robot.
( ) 9. Where’s your box? I OK,Miss Li.
( ) 10. This is for you. J Hi,I’m Mary.
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
