A: a comparison of growth rates by continent
B: family planning education
C: problems resulting from the population explosion
D: causes of the population explosion
举一反三
- With the population explosion, scientist...world’s food supply.
- This passage tells us that ______. A: the United Nations thinks it possible to avoid a population explosion B: 5.1 billion people are living in the underdeveloped countries C: in advanced nations the population growth is being controlled D: the world's population is increasing.
- This passage tells us that（） A: the United Nations thinks it possible to avoid a population explosion B: 5.1 billion people are living in the underdeveloped countries C: in advanced nations the population growth is being controlled D: the world's population is increasin
- In addition to the contribution family planning can make to the national and global population problems, special importance was given to ______ by national family planning movements.
- A population explosion will lead to（） A: a lot of social problems B: medical advances C: a decrease in food production D: a worse life in every nation with 3 billion
内容
- 0
The author of the passage intends to _________. A: warn people against the population explosion in the near future B: compare the demographic growth pattern in the past with that after 1650 C: find out the cause for rapid increase in population in recent years D: present us a clear and complete picture of the demographic growth
- 1
With the population explosion, scientists will have to _____ new methods of increasing the world’s food supply.
- 2
The chief causes of water shortage are population growth and water pollution.
- 3
Population policies have significant legal, social, ethical, and cultural impact. Optimal population size appears adequate for economy, education, healthcare, and environment. Family planning is important for adjusting the size of population.
- 4
Age distribution is the number of individuals of each age in the population which influences greatly the rate of population growth。 （ ）