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My name is Amy. Sam and Daming are my good friend. We are in my house now. I am watching TV. Sam is listening to music. Daming is reading a book about China. My little brother Tom is playing with a toy train. We are happy.
1．My good friend are _______. ( )| A．Sam | B．Sam and Daming |
| A．watching TV | B．listening to music |
| A．He’s watching TV. | B．He’s listening to music. |
| A．He’s watching TV. | B．He’s reading a book about China. |
| A．He’s playing with a toy train. | B．He’s listening to music. |
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
