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Sam: Excuse me. 1． are the books about China, please?
Librarian: They’re 2． Shelf C.
Daming: Look! They’re all 3．.
Sam: I think this book is nice.
Daming: And there is 4． a CD in it.
Librarian: Can I have your 5． 6．, please?
Sam: Yes. Here you are.
Librarian: Thank you.
| A．here |
| B．library |
| C．Where |
| D．also |
| E．card |
| F．on |
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
