学进去-教育应平等而普惠
试题
类型:看图题
难度系数:0.65
所属科目:小学英语
看图,选出正确的句子。
(_____) 1.      A. Say ‘thank you’.         B. Say ‘hello’.
(_____) 2.      A. I like Coke.             B. I don’t like Coke.
(_____) 3.          A. Eat some rice.             B. Eat some beans.
(_____) 4.             A. I like some mooncakes.  B. I like to eat taros.
(_____) 5.  A. Happy birthday!             B. Happy New Year!
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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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