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( ) （1）A. LJD B. MGB C. FJP
( ) （2）A. UN B. USA C. VOA
( ) （3）A. 9:45 B. 3:29 C. 5:36
( ) （4）A. /f/ B. /v/ C. /n/
( ) （5）A. /pig/ B./bid/ C. /desk/
( ) （6）A. older B. taller C. longer
( ) （7）A. have a cold B. have a sore throat C. have a fever
( ) （8）A. went skiing B. went ice-skating C. rowed a boat
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
