( ) 1. December A.十一月 B.十二月
( ) 2. 嘴 A. mouth B. mouce
( ) 3.wear A.穿 B.脱
( ) 4.年级 A. class B. grade
( ) 5. pet A.宠物 B.兔子
( ) 6. 短裤 A. short B. shorts
( ) 7. bread A.面包 B.肉
( ) 8.年龄 A. age B. ade
( ) 9. help A.帮助 B.谢谢
( )10.美味的 A. party B. delicious
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