学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.85
所属科目:小学英语
句型转换。
1.Little Water Drop lives in the sea. (根据划线部分提问)
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2.You should brush your teeth twice a day. (根据划线部分提问)  
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3.Kitty pours the tea into the cup. (根据划线部分提问)
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4.I brush my teeth twice every day. (根据划线部分提问)  
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5.The dolphins are jumping and swimming in the pool. (改成can句型)
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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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