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
选出句子中画线部分的反义词或对应词。
1.That coat is too expensive. (     )
A.cheapB.shortC.nice
2.These are red tomatoes. (     )
A.ThatB.ThisC.Those
3.It is cool in Yunnan today. (     )
A.coldB.warmC.hot
4.The black coat is mine. (     )
A.yoursB.yourC.my
5.It's time to get up. (     )
A.go homeB.go to schoolC.go to bed
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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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