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Hello, I am Tim. I'm seven. I have a brother, Mike. He is ten. This is Helen. She's my sister. She is nine. Who is that girl? That's Lucy. She is nine, too. She's Helen's friend. We love each other.
1．_________ is 7. ( )| A．Tim | B．Mike | C．Helen |
| A．7 | B．9 | C．10 |
| A．7 | B．9 | C．10 |
| A．Mike | B．Helen | C．Lucy |
| A．sister | B．classmate | C．friend |
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
