学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.65
所属科目:小学英语
听录音,根据问句,选择合适答句。
(______) 1. A. I like bananas.         B. I’d like some fish.     C. I have some juice.
(______) 2. A. Black and orange.     B. It’s an orange.         C.They are oranges.
(______) 3. A. Yes, please.          B. Here you are.         C.You’re welcome
(______) 4.A. He’s six.            B. I’m six.             C. Six apples.
(______) 5. A. She’s thin.         B. She’s a driver.         C. He’s a driver.
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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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