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A. He has got a bad cough. B. He has got a headache. C. He has got a cold.
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A. He's at the zoo. B. He's in the hospital. C. He's in the library.
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A. Yes, he's at school. B. No, he's not at school. C. Yes, he's in the hospital.
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A. He would like a cup of tea. B. He would like a glass of water. C. He would like a cup of coffee.
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A. She can't eat an apple. B. She can't go swimming. C. She can't stay at home.
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