学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.65
所属科目:小学英语
读句子,判断句子是否正确,在括号里用“√”或“×”表示
(_____) 1. There are five seasons in a year.
(_____) 2. It’s cold in spring.
(_____) 3. Summer is hot and sunny,
(_____) 4. The snow is small and yellow.
(_____) 5. The trees are green and the flowers(花) are nice in spring.
(_____) 6. It’s snowing today. It’s hot.
(_____) 7. It’s hot in winter and we go swimming.
(_____) 8. In autumn it isn’t cold and it isn’t hot. It’s cool.
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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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