学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
朗读句子,从中找出与例词画线部分读音相同的单词。
( )1. I'm from America.
A. lemon B. meC. we
( )2. I like kiwi fruit very much.
A. nine B. sister C. pineapple
( )3. This is a green pepper.
A. threeB. bread C. friend
( )4. I'm numberten.
A. herB. farmerC. nurse
( )5. My father is a postman.
A. doctor B. potato C. tomato
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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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