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( ) （1）A. Jacket B. skirt C. shirt
( ) （2）A. Cap B. cat C. car
( ) （3）A. father B. family C. friend
( ) （4）A. bed B. bird C. red
( ) （5）A. not B. no C. now
( ) （6）A. who B. where C. what
( ) （7）A. mother B. father C. brother
( ) （8）A. Alice B. Paul C. Tom
( ) （9）A. he’s B. she’s C. this
( ) （10）A. brown B. blue C. Black
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
