(
A. It's on the 21st of June. B. It's on the 30th of June. C. It's on the 20th of June.
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A. He can have a day off. B. He can have a party at school. C. He can have a lot of nice food.
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A. Yes, she does. B. No, she doesn't. C. We don't know.
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A. It's in September or October. B. It's in January or February. C. It's in May or June.
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A. Because he can get together with his families and have a big dinner.
B. Because he can visit his grandparents. C. Because he can wear new clothes.
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