学进去-教育应平等而普惠
试题
类型:改错
难度系数:0.65
所属科目:小学英语
改错。
1.What’s wrong withshe? (______) ______
A          B   C
2.He shouldtakessome medicine and have a good rest. (______)  ______
A     B   C
3.We shouldn’t talk loudly in the library. We shouldn’t eat or drinktoo. (______)  ______
A                               B    C
4.—Can I go to the park by metro? —No, you don’t. (______)  ______
A          B                  C
5.—What does Yang Ling get up every morning? —At 7:00. (______)  ______
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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