搜索
It's May 31st.
| A．Mother's | B．Children's | C．New Year's |
| A．am | B．do | C．will |
| A．on | B．in | C．the |
| A．a | B．an | C．the |
| A．of | B．with | C．and |
| A．I | B．my | C．me |
| A．take | B．play | C．give |
| A．sing | B．sings | C．singing |
| A．dances | B．dancing | C．dance |
| A．fun | B．funny | C．funs |
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
