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1．
( )| A．This is my family. | B．This is my grandpa. |
( )| A．He’s Mike. He’s my friend. | B．She’s Su Hai. She’s my friend. |
( )| A．—Good evening, Yang Ling. —Good evening, Miss Li. |
| B．—Goodbye, Yang Ling. |
4．
( )| A．This is Tina. She’s my sister. |
| B．This is my family. |
( )| A．—Good morning! —Good morning! |
| B．—Good afternoon! |
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
