搜索
Sam:
Lingling: They are my grandparents.
Sam: Who's this?
Lingling: It's my grandma. She was a dancer.
Amy:
Lingling: Yes, she learnt English.
Amy:
Lingling: Yes, it is. He was a driver.
Amy: Did he learn English too?
Lingling:
| A．Is this your grandpa? |
| B．Who are they, Lingling? |
| C．No, he didn't. |
| D．Did she learn any foreign languages? |
| E．She danced in lots of Chinese cities. |
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
