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:0.40
所属科目:小学英语

Many children around the world like pets because these lovely animals b1. us a lot of fun.

Children in E2. often take dogs as their pets. In C3., goldfish are popular pets with children. Children always p4. their goldfish in a fish bowl and feed them every day. Some Australian children like lizards. The lizards are very i5.. Lizard’s skin is green but it can change its colour into y6. or brown. A hamster is often white and has n7. tail. It is very s8. and cute. It is a popular pet for children in America and Canada.

Animals are our f9.. We should love and take good c10. of them.

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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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