学进去-教育应平等而普惠
试题
类型:其他
难度系数:0.65
所属科目:小学英语
选出与画线单词属于同类的词,抄写在四线三格中。
1.This is a little cat.
A. listen       B. small
2.This is my book.
A. she       B. his
3.My dad is a teacher.
A. mum       B. student
4.I read books in the morning.       
A. afternoon       B. after
5.I wash my face in the evening.
A. clothes       B. leg
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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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