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,选出句子或对话所缺的内容。(听两遍)
(      ) 1. A: Where’s the milk?
B: It’s ______ the table.
A. on                           B. under                           C. behind
(      ) 2. A: Look! A parrot!
B: How ______?
A. beautiful                    B. nice                           C. small
(      ) 3. What colour is the ______?
A. bird                           B. desk                           C. chair
(      ) 4. Is it ______ the chair?
A. on                           B. under                           C. behind
(      ) 5. Look! The bird is in the ______.
A. desk                           B. tree                           C. bag
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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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