学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.65
所属科目:小学英语
用am, is, are 填空。
1. Peter ________ my brother. He ________ tall and thin.
2. — What colour ________ the sky?
—It ________ blue.
3. — What colour ________ the pens?
— They ________black.
4. — How ________ you?
—I ________ fine.
5. My hair ________ long. My eyes ________ big.
6. — Who ________ he?
— He ________ my father.
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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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