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Every child in Sunshine School helps his parents at home on Sundays. Anne’s mother irons the clothes and she helps her. Lingling’s father waters the plants. She helps him. Dongdong’s mother cooks a meal and he helps her. Mingming often washes the vegetables when his mother cooks. The children are happy.
1．Every child in Sunshine School helps his parents at home ______. ( )| A．on Sundays | B．on Saturdays | C．on Fridays |
| A．make the bed | B．iron the clothes | C．sweep the floor |
| A．cooks the meal | B．wash the vegetables | C．waters the plant |
| A．Yes, they are | B．No, they aren’t | C．I don’t know. |
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
