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A B
1. Where’s John? A It’s sin October.
2. Where are the flowers? B Yes, it was.
3. When’s your birthday? C The students.
4. What would you like as a birthday present? D Yes, it is.
5. Was it there a moment ago? E I’d like a CD walk-man.
6. Who are very happy today? F She’s ill at home.
7. How is your mother? G It’s the 20th of May.
8. Is it in your bag? H He’s in the study.
9. What are they? I They’re in the vase.
10. What’s the date today? J They’re nice pictures.
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
