学进去-教育应平等而普惠
试题
类型:填内容补全对话
难度系数:0.65
所属科目:小学英语

Last year, there was an interesting race in the forest. It was a s1. day. There w2. many different animals. They wanted to k3. which animal would be the fastest one. You could see a tiger, a bear, a d4. and a cheetah. They were ready for the race. Many animals thought the cheetah would be the winner. Ready, go! The cheetah ran very f5.. The bear was the last one. B6. suddenly the cheetah tripped and f7. down. The tiger and the deer crashed and fell down, too. So at l8., the bear was the No. 1. The animals all laughed and gave congratulations (祝贺) t9. the bear. That was so f10..

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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

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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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