学进去-教育应平等而普惠
试题
类型:任务型阅读
难度系数:0.65
所属科目:小学英语
True or false.

Hello! My name is Xiao Xia. I have eight teachers. I have ten friends. I have seven books. I have four green notebooks. My mom buys two new schoolbags for me. I like my lovely pets—a dog and two cats.

1.I’m Xiao Xia. ________
2.I have ten teachers. ________
3.I have seven green books. ________
4.I have two new schoolbags. ________
5.I have three pets. ________
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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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