1. 在晚上___________ 2. 在周六 ______________
3. 喜欢数学____________ 4. 在河上 _______________
5. 又累又渴 _____________ 6. take care _________________
7. a bad cold ___________ 8. so difficult____________
9. Good idea.______________ 10. Don’t be sad.______
11. 喝些水______________ 12. have dinner______________
13. 放学后 _____________ 14. at night ______________
15. 踢足球__________
同类型试题
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
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