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:0.65
所属科目:小学英语
听录音,根据答句选择正确的问句,将其序号填入题前括号里。
______)1. A. What about you?           B. Where is he?               C. What’s the matter with him?
______)2. A. Where is Sam going?       B. What did Sam do?           C. What did Sam eat?
______)3. A. What colour is the orange?   B. What colour is the apple?       C. What colour is the panda?
______)4. A. What is in your room?       B. Is this your room?           C. What was in your room?
______)5. A. Where did you find Sam?   B. Where did you find Lingling?   C. Where did you find the ball?
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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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