学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
从方框中选择恰当的选项补全对话(填写选项前的字母标号即可。10颗星)

A: Dad, Mom, ____ is Henry, my new friend.
Henry, this is my father.
B: Hi, Henry Where are you ____?
C: ____ from America.
D: Welcome to our home.
____ some cookies.
C: No, Thanks.
A: He ____ chocolates.
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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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