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:0.65
所属科目:小学英语
听录音,选出与听到内容相符的应答语。
(     ) 1. A. He’s my father.                 B. He’s my teacher.                  C. She’s my mother.
(     ) 2. A. It’s a panda.                 B. I’m from Canada.                  C. He’s my father
(     ) 3. A. Wow! It’s so small.            B. Wow! It’s so tall.                  C. Wow! It’s short.
(     ) 4. A. Yes, she is.                      B. Yes, he is.                            C. No, she isn’t.
(     ) 5. A. It has a long nose.            B. It’s short.                            C. It’s small.
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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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