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Today there are many problems between parents and children. Many people always ask "Why do we often argue (争论)? "
Parents show their love for children in different ways. They cook nice food and buy new clothes for them. They also care about their studies. Parents always say "You must work hard", "You should do your homework" and "You should do more maths exercises".
When children get bad marks (分数), their parents will get very angry. They stop their children from watching TV, playing games on the Internet or going outside until they do well in their studies.
Why? Most families have only one child. The child is the hope of the family. All parents want their children to be the best.
Many children want to do things by themselves. They want to do something their parents dislike. They like pop music, basketball and other new things. They enjoy surfing the Internet and playing computer games. It takes them a lot of time to chat online. In their parents’ eyes, these take too much time. For these reasons, parents and children often argue.
| Parents | They want their children to be the best. | They want their children to They think watching TV and playing games on the Internet are |
| Children | Many of them want to do something their parents don’t like. | They like pop music, basketball and other They usually spend a lot of time surfing the Internet, playing computer games and |
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
