学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.65
所属科目:小学英语
Read and choose(阅读对话,填入适当的单词,将字母代号写在横线上)
A. chicks   B. pigs   C. hungry   D. yellow   E. three
—Mother, look. What are they?
—They are balloons. They are pink.
—Look at the animals. What are they?
—They are 1..They are fat.
—How many pigs?
—Let me count. There are 2..
—Mother, look at the 3..
—No, they' re ducks. They can swim.
—What colour are they?
—They are 4.and white.
—Mother, look at the animals. What are they?
—They are cats. They are 5.. They are not happy.
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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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