(____) 1.A. banana B. pear C. short
(____) 2.A. pencil B. car C. ruler
(____) 3.A. pencil B. book C. school
(____) 4.A. dog B. pig C. play
(____) 5.A. red B. one C. green
(____) 6.A. girl B. teacher C. bus
(____) 7.A. class B. school C. pen
(____) 8.A. Chinese B. English C. class
(____) 9.A. mother B. father C. teacher
(____) 10.A. twelve B. five C. box
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