Hello!
A.I | B.My | C.Me |
A.girl | B.boy | C.bag |
A.English | B.Chinese | C.England |
A.friends | B.friend | C.friendly |
A.It's | B.He's | C.She's |
A.at | B.from | C.come |
A.teacher | B.doctor | C.driver |
A.TV reporter | B.nurse | C.farmer |
A.boy | B.friends | C.girl |
A.She's | B.He's | C.It's |
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