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,选出句子或对话所缺的内容。
(     ) 1. I can see many ______ in this school.
A. birds            B. trees            C. flowers
(     ) 2. A: Where's the ______?            B: It's over there.
A. picture            B. boat            C. panda
(     ) 3. A: Do they go to the ______ every day?            B: No, they don't.
A. farm            B. park            C. zoo
(     ) 4. A: Where are the boys?          B: They're on the ______.
A. hill            B. lake             C. river
(     ) 5. A: Can your sister ______ a pineapple?            B: Yes, she can.
A. eat            B. draw            C. make
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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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