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
根据图片内容圈出每个句子中括号内正确的一项,并把句子前的序号写在括号内。
A. The elephant has a (short / long) nose.
B. The boat is (in / on) the desk.
C. I like (bananas / strawberries).
D. I see (six / sixteen) balloons.
E. This is my (grandmother / grandfather).

1. (     )
2. (     )
3. (     )
4. (     )
5. (     )
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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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