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Hello, my name is Jack. I'm twelve years old. I'm from America. I live on a farm with my parents. There is a river in front of our house. The river is very clean. I often swim in the river with my friends in summer. There are some goats, cows and pigs behind our house. Oh, there is a forest near our house, too.
1．How old is Jack? ( )| A．10. | B．11. | C．12. |
| A．England. | B．America. | C．China. |
| A．A river. | B．A forest. | C．A tree. |
| A．He often sings with his friends. | B．He often swims with his friends. | C．He often swims with his parents. |
| A．No, there isn't. | B．No, there aren't. | C．Yes, there is. |
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
