Hello! My name is John. J-O-H-N, John. I am thirteen
A.years-old | B.years old | C.year old |
A.mouth | B.eye | C.eyes |
A.long | B.tall | C.small |
A.And | B.but | C.But |
A.a | B.any | C.many |
A./ | B.is | C.are |
A.big | B.short | C.long |
A.bear | B.dog | C.elephant |
A.It’s | B.His | C.He’s |
A.How | B.What | C.What are |
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