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( ) 1. What are they doing? A I’m behind the tree.
( ) 2. Where’s the Park? B No, I haven’t.
( ) 3. Have you got a new book? C Yes, please.
( ) 4. What is Amy doing? D They are watching TV.
( ) 5. Do you want some dumplings? E Turn right.
( ) 6. How much are they? F They are fifty yuan.
( ) 7. Can she run fast? G She’s swimming.
( ) 8. How are you? H We want some eggs.
( ) 9. Where are you? I Yes, she can.
( ) 10. Can I help you? J I’m fine.
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
