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,从每小题三个选项中选出你所听到的答语,每个句子读两遍。
(      ) 1. A. She goes shopping       B. She usually plays the pipa.
C.   She goes swimming.
(      ) 2. A. At 6:00 p.m.        B.   At 5:30 p.m.        C. At 7:30 p.m.
(      ) 3. A. In June.        B.   In August.        C.   In April.
(      ) 4. A. Summer.        B.   Spring.        C. Winter.
(      ) 5. A. Because he can swim in the river.        B.   Because he can fly a kite.
C.   Because he can go on a picnic.
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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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