学进去-教育应平等而普惠
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类型:选内容补全对话
难度系数:0.65
所属科目:小学英语
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Tomorrow is Sunday. I won’t go to school. But I will be very 1.. In the morning, I will go 2. in the supermarket with my mother. We go to the supermarket three 3. a week. In the afternoon, I will plant trees on the mountain. Some people 4. down trees. That’s bad for the earth. So we should plant 5. trees. In the evening, I will play sports in the park. I like sports. Sports make me 6..

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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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