搜索
Guigui:
Huahua: What colour is it?
Guigui:
Huahua: OK.
Guigui: An English book, three notebooks and some pencils.
Huahua: Look!
Guigui: Yes, it is.
Huahua: Here you are.
Guigui:
| A．Is this your schoolbag? |
| B．I lost my schoolbag. |
| C．It’s red and white. |
| D．Thank you so much! |
| E．What’s in it? |
| F．Where is it? |
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
