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It’s Sunday today. It’s time for lunch. Mrs Brown is in the kitchen. She is cooking lunch. Mr Brown is in the garden. He’s washing his car. Sam, their son, is only six years old. He is in the living room. He is watching cartoons. Cindy, their daughter, is in the study (书房). She is doing her homework. What’s the cat doing? Ha-Ha! It’s waiting for lunch.
1．It’s time for supper.2．Mrs Brown is cooking lunch.
3．Mr Brown is washing his car.
4．Cindy is doing her homework in the living room.
5．The cat is waiting for lunch.
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
