(____) 1.A. colour B. some C. clock
(____) 2. A. window B. brown C. about
(____) 3. A. green B. me C. sweater
(____) 4. A. behind B. which C. China
(____) 5. A. black B. father C. car
(____) 6. A. fifteen B. head C. green
(____) 7. A. like B. sit C. rice
(____) 8. A. dress B. yours C. whose
(____) 9. A. we B. desk C. bed
(____) 10. A. orange B. sorry C. over
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