学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
Find the different words.(选出不同类的单词)
(_______)?1.?A.?stone????   B.?grass???????   C.?water?????   D.?home
(_______)?2.?A.?train???? B.?write??????     C.?bus???????   D.?subway
(_______)?3.?A.?there????   B.?where?????     C.?weather????   D.?here?
(_______)?4.?A.?city?????   B.?town???????     C.?school????   D.?province?
(_______)?5.?A.?fruit?????   B.?find???????   C.?food??????   D.?vegetables
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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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