学进去-教育应平等而普惠
试题
类型:选词/短语填空
难度系数:0.65
所属科目:小学英语
选词填空。
am  is  are  have  has
1. I ________ my own room. My sister ________ her own room,too.   
2.There ________ a bed,a desk and lots of books in my room.   
3. I ________ a little girl. My best friend ________ a little girl,too.   
4. There ________ some pens and some erasers in my schoolbag.   
5. My mother ________ a teacher. She ________ long hair.   
6. There ________ some water in the water bottle.   
7. There ________ some trees in front of my new house.
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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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