学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.85
所属科目:小学英语
听录音,根据对话内容,完成下列各题。(听两遍)
听一段对话,回答第1〜2小题。
( ) 1. Did Darning buy a model of a spaceship?
A. Yes, he did.       B. No, he made it.       C. No, Simon bought it for him.
( ) 2. Is it a model of a Chinese spaceship?
A. Yes, it is.       B. No, it isn't.       C. No, it's about a spaceship from the US.
听一段对话,完成第3〜5小题。
( ) 3. The present is a ________.
A. pencil       B. pen       C. book
( ) 4. The present is from ________.
A. the UK       B. the US       C. China
( ) 5. The present is ________.
A. blue       B. pink       C. red
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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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