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,选择合适的应答,将序号写在题前的括号内。 (听两遍)
(      ) l. A. No, there isn't.                 B. Yes, there are.                    C. Thirty.
(      ) 2. A. Yes, he do.                      B. He has a parrot.                 C. No, he doesn't
(      ) 3. A. Yes, there are.                 B. Yes, they are.                    C. No, they are.
(      ) 4. A. She likes PE.                  B. He likes running.               C. He likes PE very much.
(      ) 5. A. Yes, we do.                    B. We play on the swing in the garden.
C. We put a stocking on our beds and wait for presents.
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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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