A. **immigration**(移民) - 移民是美国人口增长的主要来源之一,因为美国长期接受大量来自其他国家的移民,这直接增加了人口数量。 B. **social security**(社会保障) - 社会保障是福利政策,与人口增长无直接关系。 C. **high birth rate**(高出生率) - 美国的出生率近年处于较低水平,并非主要增长源。 D....
A major source of population growht in the United States is _A_ A.immigration B.social security C.high birth rate D.low death rate 相关知识点: 试题来源: 解析 A.immigration 题目询问美国人口增长的主要来源。分析选项: - **A. immigration(移民)**:美国长期接受大量移民,移民是其人口增长的重要...
about 20 minutes on this task.The two graphs show the main sources of energy in the USA in the 1980s and the 1990s.Write a report for a university lecturer describing the changes which occurred.Write at least 150 words.model answer:The two graphs show that oil was the major energy s ...
8. Nuclear power is one of the major energy source in Britain.(T) Chapter 5 1. The British government has been responsible for education since the early 1800s.(F) 2. Education in Britain is compulsory for all children between the ages of 6 and 15.(F) 3. The National Curriculum is c...
F1. In the United States, the major source of population growth is the rising birth rate. F2. In the United States, the largest minority group is the African-American group. T3. In the United States, the fastest-growing group is the Asian-American group. F4. Native Americans have a ...
A. Tide energy B. Geothermal energy C. Biofuel D. Hydrogen E. nergy 相关知识点: 试题来源: 解析 B。解析:本题考查地球能源来源的知识。地热能是从地球获取的主要能源之一。A选项潮汐能主要是月球引力等引起的;C选项生物燃料主要来源于生物;D选项氢能不是直接从地球获取的主要能源。反馈...
百度试题 结果1 题目4. The sun is the major source of energy for our planet. 来源 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
In the United States, the major source of population growth is the rising birth rate. ()2. In the United States, the largest minority group is the African-American group. ()3. In the United States, the fastest-growing group is the Asian-American group. ()4. Native Americans have a ...
I have always believed that contemporary gender discrimination within universities is part reality and part perception,n the universitys president, Charles M. Vest, wrote in the 1999 report. uTrue, but I now understand that reality is by far the greater part of the balance.M That unusual ...
This review article provides a synthesis of the most significant transitions taking place in the energy systems of the USA in 2018. These include the leveling off of the total consumption of primary energy and electricity, a shift away from coal-fired el