搜索
( ) （1）A. father B. mother C. brother
( ) （2）A. nine B. red C. cousin
( ) （3）A. long B. glasses C. green
( ) （4）A. aunt B. hair C. uncle
( ) （5）A. teacher B. doctor C. clerk
( ) （6）A. nose B. cat C. map
( ) （7）A. up B. east C. left
( ) （8）A. Canada B. China C. U.S.
( ) （9）A. hotel B. jump C. suitcase
( )（10）A. now B. know C. knee
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
