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A young mother and her little girl get on a bus and sit down. The bus conductor (乘务员) comes to ask them to buy the tickets. “I want one ticket to Children’s Park.” The conductor looks at the little girl and says to her. “How old are you?” The girl answers. “Mother says I am four years old at home, but I’m two years old on the bus.” The young mother’s face turns red, very red. Then she buys a half (一半) ticket.
1．A mother and her son get on a bus and sit down.2．They want to go to the Children’s Park.
3．The little girl is two years old.
4．The mother is very happy at last (最后).
5．The mother buys a half ticket for her daughter.
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
