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,选择正确的答语,录音读两遍。
(      ) 1. A. Yes, she is.                           B. No, she isn’t                    C. Yes, it is.
(      ) 2. A. Because I can swim.          B. Because I can skate.
C. Because I like summer.
(      ) 3. A. It’s 4:50                        B. I go home at 5:50
C. I go to bed at 4:50
(      ) 4. A. I can fly kites.          B. I often make a snowman.                 C. I’d like to swim.
(      ) 5. A. It’s Monday.                 B. It’s April 8th.
C. It’s on October 1st.
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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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