(____) 1. A. head B. foot C. cat
(____) 2. A. fifteen B. green C. blue
(____) 3. A. pen B. desk C. leg
(____) 4. A. book B. pencil C. nose
(____) 5. A. small B. arm C. big
(____) 6. A. shoes B. football C. ping pong
(____) 7. A. cat B. new C. old
(____) 8. A. Monday B. stamp C. Saturday
(____) 9. A. peach B. dress C. pear
(____) 10. A. house B. chicken C. duck
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