搜索
In Amy’s class, every student has a pen pal. Miss White helps them to send letters once a week. Amy knows her pen pal goes to school by bus, and her pen pal’s mother is a teacher. Her pen pal’s father is a doctor. Her pen pal has a happy family.
( ) 1. In Amy’s class, every student doesn’t have a pen pal.( ) 2. Mr. Black helps them to send letters.
( ) 3. Amy’s pen pal goes to school by car.
( ) 4. Her pen pal’s mother is a teacher and father is a doctor.
( ) 5. Her pen pal has a happy family.
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
