学进去-教育应平等而普惠
试题
类型:看图题
难度系数:0.65
所属科目:小学英语
用现在进行时完成下列句子。
1. ________ your brother ________ (watch) TV now?
2. We ________________ (play) basketball now.
3. — What ________ she ________ (do)?
— She _________________ (ride) a bike.
4. Those boys ________ (play) football on the playground.
5. They ________ (talk) in English.
6. Those children ________________ (sing) in the classroom.
7. The naughty boy ________________ (swim) in the river.
8. ________ Mary ________ (play) the piano?
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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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