学进去-教育应平等而普惠
试题
类型:选词/短语填空
难度系数:0.65
所属科目:小学英语
how     how many     how old     what     whose     who     how much     where

1.—_______ pencil case is that?   —It’s Mary’s.
2.—_______ knives do you have?   —I have three.
3.—_______ is your sister?   —She’s twelve.
4.—_______ is your friend?   —Peter and Jill.
5.—_______ is that?   —It’s cherry juice.
6.—_______ does the juice taste?   —It’s sweet.
7.—_______ is my book?   —It’s on the desk.
8.—_______ is that glass of juice?   —It’s ten yuan.
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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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