学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
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: What are these?       B: They're ________.
A. pigs                                        B. pies                                          C. cows
(     ) 2. A: Is ________ you, Miss Li?       B: No.
A. she                                          B. that                                          C. this
(     ) 3. A: Are ________ apples?       B: Yes, they are.
A. these                                      B. those                                        C. they
(     ) 4. This is ________.
A. a cake                                     B. a cow                                        C. an egg
(     ) 5. Look at ________.
A. the pig                                     B. the blackboard                           C. my pictures
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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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