学进去-教育应平等而普惠
试题
类型:词汇选择题
难度系数:0.65
所属科目:小学英语
火眼金睛。请选出与句中画线部分同类的一项。
1.My hometown (家乡) is a beautiful village. (       )
A.gameB.cityC.cousin
2.We had some watermelons yesterday afternoon. (       )
A.ateB.drinkC.buy
3.The children had a good time last Sunday. (       )
A.beautifullyB.wellC.great
4.My grandparents talked with some friends in the park. (       )
A.toB.outC.so
5.I will take my kite to Jin Park on Saturday. (       )
A.weB.himC.our
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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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