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
听问句,选出合适的答句。
(     ) 1. A. I like Science.       B. I have Art.       C. I like drawing.
(     ) 2. A. It’s seven forty.       B. At seven forty.       C. It’s late.
(     ) 3. A. I can skate.             B. I can try.       C. I can see a lake.
(     ) 4. A. Good idea.       B. Well done.       C. Try again.
(     ) 5. A. He can draw.       B. I can swim well.       C.She can make cakes.
(     ) 6. A. Yes, I can.       B. No, I can’t.       C. Sure, it’s easy.
(     ) 7. A. We have six.       B. At six.       C. It’s six.
(     ) 8. A. It’s Tuesday.       B. On Tuesday.       C. At night.
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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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