In the past, people worried a lot about the (增长) of the world population (然而), there is a new (问题) at present. That is a too low (出生) rate in the past ten years. This happens in both developed and developing countries. How does this happen? There are some (原因): Firstly, many (政府) support the family planning policy to reduce the population growth, and most of them have made great progress(进步) . Secondly, more people get (结婚) late. They want to succeed in business and have little time to think about marriage. Thirdly, many couples like to stay in a two-person world. They don't want to have (宝宝) . Lastly, more women go out to have higher education or to do more important work. They would rather go to work than have children. The countries with (更少) births than deaths could face a serious shortage(短缺) of young workers in the future. They must think of ways to (解决) it.
very along the seashore.
are there in your city?
We turn off the light when we leave the room we can protect the environment.
My home is my school.
I have known David for 20 years.
Is the world too crowded? Well, that's a hard question to answer. It's a matter of perspective(视角). In Montana, you might drive for a mile in any direction and not see another human being. In Macao, about 50, 000 people live in every square mile!
What is true is that the world's population doesn't stay the same. It has been increasing at a very fast rate. That's in part because in each generation(代) there are more people who would like to have children than those in the last generation.
Five hundred years ago, the population of the world was about 425 million. Right now it is doubling every 40 years. That means, if this rate of growth continues, when you are a parent, there will be twice as many people on the earth as there are now. Wow! That's a lot of people! Soon the world's population will probably reach 8 billion. Some people worry about that! But there is a lot of disagreement about the view that how many people on the earth equals(相当于) too many people. But everyone agrees that the more people there are, the more resources the world needs to feed, store and take care of, and the more need there is to think carefully about how we live and use the earth's resources.
