学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.85
所属科目:小学英语
根据对话内容选择合适的图片。
A.   B. C. D. E.
1.A: What's the weather like there?   (____
B: It's snowy.
2.A: What should Bob take with him? (____) 
B: He should take some sweaters.
3.A: What does your mother do? (____
B: She is a teacher.
4.A: You look excited. Why? (____)   
B: Because I won the game.
5.A: How many people are there in Ted's family? (____
B: There are four.
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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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