学进去-教育应平等而普惠
试题
类型:中英文匹配
难度系数:0.94
所属科目:小学英语
选择正确的翻译。
A.把它给我!
B.我们班级里有50个学生。
C.您能看见几只鸭子?
D.你家有几口人?
E.我有两个妹妹。
1.There are fifty pupils in our class. (______)
2.Give it to me! (______)
3.How many people are there in your family? (______)
4.I have two sisters. (______)
5.How many ducks can you see? (______)
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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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