( ) (1) A. concert B. contest C. picnic
( ) (2) A. everyone B. eleven C. elephant
( ) (3) A. piano B. violin C. guitar
( ) (4) A. 6:45 B. 7:15 C. 6:30
( ) (5) A. get there B. get together C. get here
( ) (6) A. opera B. project C. plan
( ) (7) A. walk B. winter C. write
( ) (8) A. January 2nd B. June 2nd C. July 2nd
( ) (9) A. making noise B. making planes C. making kites
( ) (10) A. fly a kite B. write a card C. ride a bike
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