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Sarah: Hello, Mike. This is my friend, Bai Ling.
Mike: Nice to meet you.
Bai Ling: Nice to meet you, too.
Sarah: Happy birthday to you.
Mike: Thank you.
Bai Ling: How old are you?
Mike: I’m 9.How old are you?
Bai Ling: I’m 8.
Sarah: I’m 8, too.
Mike: Let’s open the box(盒子) and cut the cake.
Sarah: Great!
Bai Ling: Look! A birthday card.
( ) 1.Today ( 今天 ) is Sarah’s birthday.
( ) 2.Mike is 9.
( ) 3.Sarah is 8.
( ) 4.Bai Ling is 9.
( ) 5.Mike, Sarah, and Bai Ling eat bread.
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
