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,选择你所听到的句子。
(       ) 1. A. We always have a special meal.        B. We watch a big football game on TV.        C. We say “thank you” for our food, family and friends.
(       ) 2. A. Here’s my English book.        B. Here’s your birthday present.        C. Here’s my library card.
(       ) 3. A. I live in the north of Hubei.        B. I live in the south of Hubei.        C. I live in the west of Hubei.
(       ) 4. A. Don’t be late for school.        B. Don’t play football in the classroom.        C. Don’t talk. Please be quiet.
(       ) 5. A. These are stamps from Canada.        B. These stamps are from my letters.        C. These are some photos of my new bicycle.
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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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