搜索
Hi, I’m Lingling. This is my family. Look! Mum is making a cake. Dad is listening to music. My grandma is reading a book. And my grandpa is taking pictures. My friend, Amy, is flying a kite. Sam is playing football with Daming. And I’m riding a bike. We are very happy.
1．Lingling’s mum is listening to music.2．Lingling’s grandma is watching TV.
3．Lingling’s grandpa is taking pictures.
4．Sam is playing football with Amy.
5．Lingling is riding 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
