学进去-教育应平等而普惠
试题
类型:任务型阅读
难度系数:0.65
所属科目:小学英语

Jim has a happy family. His father is a worker. He likes playing football. He always plays football on Sunday. His mother is a teacher. She likes reading. She often reads in the evening. Jim's sister is a student (学生). She likes singing and dancing. Jim is a student, too. He likes going swimming. He can swim very well.

1.There are four people in Jim's family. (     )
2.Jim's father likes playing basketball. (     )
3.Jim's mother is a worker, too. (     )
4.Jim's mother likes reading. (     )
5.Jim's sister likes singing and dancing. (     )
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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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