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:0.65
所属科目:小学英语
听录音,选出你所听到的句子,每小题听两遍。
(      ) 1. A. Is it rainy?               B. Is it hot?               C. Is it cold?
(      ) 2. A. Go to the library. Read a book.               B. Go to the playground. Play football.
C. Go to the garden. Water the flowers.
(      ) 3. A. Let’s have some chicken.               B. Let’s jump and run.                 C. Let’s eat some rice.
(      ) 4. A. It’s time for PE class.                    B. It’s time for art class.               C. It’s time for Chinese class.
(      ) 5. A. Do you have a teachers’ office?       B. Do you have a lunch room?       C. Do you have a gym?
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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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