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1．What season is it? ( )
| A．Autumn | B．Summer  | C．Winter |
| A．It is fine. | B．It is rainy.  | C．It is snowy. |
| A．Anna | B．Bill | C．Nobody |
| A．She is sad. | B．She is happy.  | C．She is angry. |
| A．On the tree. | B．Under the tree. | C．In the tree. |
| A．2 | B．1 | C．3 |
| A．Frogs | B．A frog | C．Leaves |
| A．In front of the slide. | B．In front of the swing. | C．Behind the tree. |
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
