搜索
[[QOrDeR]]—Where are you from? ( )
—__________
| A．I’m fine. | B．I’m five. |
| C．I’m a girl. | D．I’m from America. |
—________
| A．Goodbye! | B．No, I do. |
| C．Oh, no! | D．Yes, I am. |
— ________
| A．Thank you. | B．Fine, thank you. |
| C．Good afternoon! | D．Great! |
—________
| A．Yes. | B．Thank you. |
| C．Come in. | D．It’s OK! |
— It’s OK.
| A．This is Sarah. | B．Nice to meet you! |
| C．I’m sorry. | D．My name is Amy. |
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
