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A B
（ ）1.We have two new friends today. A Yes, she is.
（ ）2.Nice to see you. B She’s my mother.
（ ）3.Is he your father? C Welcome!
（ ）4.Where are you from D Nice to see you,too.
（ ）5.Let’s play a game! E He’s my brother.
（ ）6.Is she your mother? F No, he isn’t.
( ) 7. Who’s that woman? G I’m from Canada.
( ) 8. Who’s that boy ? H OK.
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
