学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.85
所属科目:小学英语
从方框中选择恰当的选项把对话补充完整,把标号填在题中横线上即可。

Bob: Are they ____?
Zhang Hong: Yes, they are. They're very ____. I like them very much.
Bob: Me, too. But I ____ white whales best.
Zhang Hong: Why?
Bob: They're very kind and friendly ____ people. They're clever, too.
They can sing and dance.
Zhang Hong: Listen! Are they ____ now?
Bob: Yes, they are.
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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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