学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
看图、选出相应短语。
1.  (       )       
A. watch TV           B. play computers
2.     (       )       
A. have dinner       B. clean the room
3.     (       )       
A. go to school     B. have a picnic
4. (       )       
A. do homework       B. watch a film
5. (       )   
A. on the moon       B. go swimming
6.   (       )       
A. in a spaceship       B. on the moon
7.   (       )
A. play basketball       B. play football
8.   (       )
A. singing contest     B. writing contest
9.(       )
A. high jump   B. long jump
10.(       )   
A. read books       B. tell a story
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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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