Unit1 1 . Most countries take a census every 10 years or so in order to count the people and to know where they are living. 1.大多数国家每10 年左右进行一次人口普查，以便统计人口并了解他们的居住区域。 2. A country with a growing population is a country that is becoming more populous. 2.人口增长的国家是一个人口越来越多的国家。 3. A person’s race is partly determined by skin color and type of hair as well as other physical characteristics. 3.一个人的种族部分取决于肤色和头发类型以及其他身体特征。 4. The majority of the U.S. population is of European origin. 4.大多数美国人口来自欧洲 5. The geographical distribution of a country’s population gives information about where the people are living. 5.一个国家人口的地理分布提供了人们居住地的信息。 6. Many different kinds of people comprise the total U.S. population. In other words, people of different races and ages make up the population. 6.许多不同类型的人构成美国总人口。 换句话说，不同种族和年龄的人构成了人口。 7. The median age of the U.S. population, which is a relatively large one, has been getting progressively higher recently. 7.美国人口的年龄中位数相对较大，最近逐渐上升。 8. Metropolitan areas are more densely populated than rural areas. That is, they have more people per square mile. 8.大都市区的人口密度高于农村地区。 也就是说，他们每平方英里有更多的人。 9. I want to discuss the distribution of the U.S. population in terms of age and gender. 9.我想讨论美国人口在年龄和性别方面的分布。 10. In fact, statistically, women generally live longer than men worldwide. 10.事实上，从统计数据来看，女性在全世界的寿命通常比男性长。 11. A country whose birth rate is higher than its death rate will have an increasing population. 11.出生率高于死亡率的国家人口将增加。 12. On the average, women have a higher life expe...
