(1)A. books B. box C. balls
(2)A. shorts B. socks C. shoes
(3)A. thirsty B. thirty C. thirteen
(4)A. 89 B. 98 C. 18
(5)A. 7:05 B. 11:45 C. 12: 35
(6)A. kite B. cat C. cap
(7)A. colour B. crayon C. clean
(8)A. know B. now C. new
(9)A. colour it blue B. colour it brown C. colour it black
(10)A. 16+20 B. 28+35 C. 40+18
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