学进去-教育应平等而普惠
试题
类型:单选题
难度系数:0.65
所属科目:小学英语
读一读,选择画线部分单词的对应词填空。
1.Turn left at the restaurant.   (   )
A.rightB.straightC.early
2.The bike is very slow.     (   )
A.attentionB.fastC.half
3.She feels happy every day.   (   )
A.interestingB.amazingC.sad
4.My little sister is ill. She feels sad.   (   )
A.badB.wellC.worry
5.Her aunt is a businesswoman.   (   )
A.businessmanB.scientistC.policeman
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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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