搜索
( )1. A. ruler B. watermelon C. dictionary D. schoolbag
( )2. A. apple B. notebook C. grapefruit D. coconut
( )3. A. my B. she C. your D. his
( )4. A. blue B. orange C. banana D. yellow
( )5. A. forty B. hundred C. fine D. ten
( )6. A. dress B. scarf C. coat D. water bottle
( )7. A. sandwich B. pie C. coffee D. bread
( )8. A. sister B. mother C. teacher D. father
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
