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Kitty: What is Lucy doing?
Lucy: I’m dancing now.
Kitty: What is Kate doing?
Lucy: Kate is sleeping in her bedroom.
Kitty: What is Danny doing?
Lucy: He is singing.
Kitty: What is Li Ming doing now?
Lucy: He is drawing.
Kitty: What is your mother doing?
Lucy: My mother is cooking in the kitchen.
( )1. Lucy is dancing.
( )2. Kate is singing.
( )3. Danny is sleeping.
( )4. Li Ming is drawing.
( )5. Lucy’s mother is cooking.
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
