学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
看图选句子,把正确的答案写在前面的括号里。
(1)

A.She can swim.
B.She can dance.
(2)
A.She is using chopsticks.
B.She is using a knife and fork.

(3)

A.I can’t jump far.
B.I can’t run fast.
(4)

A.She is eating rice.
B.She is eating noodles.
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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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