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[[QOrDeR]]志愿者王华见到外国游客，主动走过去并自我介绍说：________ ( )
| A．Hello, Wang Hua! Good morning! |
| B．Hello, I’m Wang Hua! Good morning! |
| A．Good morning! Mum! |
| B．Good bye! Mum. |
| A．Good bye! |
| B．Morning! |
| A．Good morning! Miss Li! |
| B．Good afternoon! Miss Li! |
| A．He’s Wang Ling. |
| B．My name’s Wang Ling. |
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
