听一段对话,回答第1~3小题。
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A. There are 42. B. There are 24. C. There are 40.
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A. Yes, there are. B. No, there aren’t. C. We don’t know.
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A. They are on the first floor. B. They are on the second floor. C. They are on the third floor.
听一段对话,回答第4~6小题。
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A. 2. B. 3. C. 4.
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A. It has a short tail and long ears. B. It has a long tail and big ears. C. It has a short tail and short ears.
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A. It’s big. B. It’s small. C. It’s lovely.
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