阅读理解。
Is the world too crowded? Well, that's a hard question to answer. It's all a matter of perspective (视角).
In Montana, you might drive for a mile in any direction and not see another human being. In Ma,60,000
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
(比例). That's in part because in each generation (代) these are more people who then have children than in
the last generation.
Five hundred years ago, the population of the world was about 460 million. In 1900,the world's population
was under 2 billion (十亿). 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 earth as there are now. Wow! Now
that's a whole lot of people! Soon the world's population will probably reach 7 billion. Some people worry
about that! But there is a lot of disagreement about just how many people on earth equals (相当于) too many
people. But everyone agrees that the more people there are, the more resources (资源) the world needs to feed,
house and take care of all of them, and the more need there is to think carefully about how we live and use the
earth's resources.
1. From the first paragraph we can know that _____.
A. Montana is too crowded
B. Ma is too crowded
C. the world is too crowded
D. the world is not too crowded
2. The population is increasing fast partly because _____.
A. people live longer than before
B. there are less wars than before
C. medicine is developing faster than before
D. more couples now would like to have children than before
3. What was the world's population 100 years ago?
A. 450 million.
B. About 2 billion.
C. 40 billion.
D. 7 billion.
4. The writer thinks that with the population increasing, we should _____.
A. find more resources
B. use more resources
C. think about our ways of living
D. move to other places
5. From the passage we can learn that the writer _____.
A. thinks the world already has too many people
B. thinks the world can feed no more than 7 billion people
C. is not sure when the world's population will reach 7 billion
D. is not sure what the largest population that the world can feed is