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Hello, I'm Sam. I'm from England. Now I am in Beijing with my family. I've got a pet dog. It's lovely and nice.
Tomorrow is Sunday. My sister Amy is going to have a birthday party. Now I'm making a card for her. Dad is buying things at the supermarket. Mum is making a cake for her. What can my pet dog do for Amy? Oh, it can sing and dance for her!
1．Sam is from China. （2．Sam has got a pet dog. （
3．Amy is going to have a birthday party this Sunday. （
4．Sam's dad is making a card for Amy. （
5．Sam's pet dog can dance and sing. （
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
