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I’m Ann. I am watching a television programme about China. An old woman is talking about her life.
Many years ago, there weren’t any buses or cars. People lived in a small house. Children walked to school. They didn’t have enough food. They didn’t have beautiful clothes. Now people live in a big house. They have enough food. There are many buses and cars. Now life is very happy. We must work hard.
1．Ann is watching a television programme.2．People lived in a big house many years ago.
3．An old woman is talking about her life many years ago.
4．Now there weren’t any buses or cars.
5．Many years ago, they had enough food.
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
