Sarah: Hi, I’m Sarah. I have a book.
Mike: Hello! My name’s Mike. I have a ruler and an eraser.
Lily: I’m Lily, I have a pencil. Oh, no! I have a pencil box.
John: My name’s John. I have a pen.
Wu Yifan: I’m Wu Yifan. I have a crayon and a bag.
1.Sarah has (有) a book. (
2.Wu Yifan has a crayon and a bag. (
3.Lily has a pencil. (
4.John has a pencil. (
5.Mike has a pencil box. (
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同类型试题
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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
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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
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