学进去-教育应平等而普惠
试题
类型:看图题
难度系数:0.65
所属科目:小学英语
Look and write(根据图意,写出合适的单词完成句子)
1.This is my friend Kelly from the f________ floor.
2.— Who’s she?   — She’s my sister. She l________ pretty flowers.
3.Li Ming and Li Gang b________ like playing ping-pong.
4.Look at the footballs. One is big, and one is small. They’re d________ .
5.Look at this boy. He has a bicycle. He often r________ it to the park.
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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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