学进去-教育应平等而普惠
试题
类型:改错
难度系数:0.40
所属科目:小学英语
找出错误并改正。
1.Jenny is writinga email to Steven. (______________
A   B     C
2.This wall have a beautiful picture on it. (______) ________
A     B                 C
3.Don’t forget write your name last. (______________
A        B           C
4.— How manyare those black T­shirts?  — Fifteen yuan. (______________     
A     B            C
5.Danny and Jenny wants to buy some postcards. (______) ________
A     B        C
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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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