In the past, life was very hard, and many people were very poor. Lots of people had no enough food to eat. There were many people in a family and they lived a poor life. In those poor days, people had little meat to eat. They had vegetables every meal. Most of people can only eat some meat at the Spring Festival.
Now, life is becoming richer and richer. People can eat meat every meal. So they eat a lot of meat. They rarely have vegetables. As a result, they get fatter and fatter. They live a rich but unhealthy life.
To live a healthy life, we should eat healthy food and do more exercise. We should eat more vegetables and fruit. They are very important and healthy. Meat and oil are also very important to our bodies. But too much of them will make us fat and unhealthy.
1.In the past, people were very poor.2.People in the past had enough food to eat.
3.Most of people had some meat on Mid-Autumn Day in the past.
4.People nowadays live a rich and healthy life.
5.To be healthy, we should eat healthy food and do little exercise.

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

