国产福利福利视频_91麻豆精品国产自产在线_中文字幕观看_欧美毛片aaa激情

2023年12月暑期英語六級備考閱讀每日一練 0826

雕龍文庫 分享 時間: 收藏本文

2023年12月暑期英語六級備考閱讀每日一練 0826

  cet6整理的2023年12月英語六級閱讀每日一練,幫助考生順利通過六級考試。

  We can begin our discussion of population as global issue with what most persons mean when they discuss the population problem: too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute, It was quite right to employ the analogy that likened demographic growth to a long, thin powder fuse that burns steadily and haltingly until it finally reaches the charge and explodes.

  To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history, we find that populations have been virtually stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. There was high fertility in most places, but this was usually balanced by high mortality. For most of human history, it was seldom the case that one in ten persons would live past forty, while infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birthrates. Thus, the population problem throughout most of history was how to prevent extinction of the human race.

  This pattern is important to notice. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high mortality.

  Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8,000 BC. till approximately AD. 1650. In the first period of some 9600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and the present, the population has increased from 500 million to more than 4 billion. And it is estimated that by the year 2000 there will be 6.2 billion people throughout the world. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000BC and 1650, an average of only 50,000 persons was being added annually to the worlds population each year. At present, this number is added every six hours. The increase is about 80,000,000 persons annually.

  1. Which of the following demographic growth pattern is most suitable for the long thin powder fuse analogy?

  A. A virtually stable or slightly decreasing period and then a sudden explosion of population.

  B. A slow growth for a long time and then a period of rapid, dramatic increase.

  C. Too many people on earth and a few rapid increase in the number added each year.

  D. A long period when death rates exceeds birthrates and then a short period with higher fertility and lower mortality.

  2. During the first period of demographic history, societies were often in danger of extinction because___.

  A. only one in ten persons could live past 40.

  B. there was higher mortality than fertility in most places.

  C. it was too dangerous to have babies due to the poor conditions.

  D. our ancestors had little enthusiasm for more children.

  3. Which statement is true about population increase?

  A. There might be an increase of 2.2 billion persons from now to the year 2000.

  B. About 50,000 babies are born every six hours at present.

  C. Between 8000 BC and the present, the population increase is about 80,000,000 persons each year.

  D. The population increased faster between 8000BC and 1650 than between 1650 and the present.

  4. 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.

  5. The word demographic in the first paragraph means___.

  A. statistics of human.

  B. surroundings study.

  C. accumulation of human.

  D. development of human.

  答案:ABADA

  

  cet6整理的2023年12月英語六級閱讀每日一練,幫助考生順利通過六級考試。

  We can begin our discussion of population as global issue with what most persons mean when they discuss the population problem: too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute, It was quite right to employ the analogy that likened demographic growth to a long, thin powder fuse that burns steadily and haltingly until it finally reaches the charge and explodes.

  To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history, we find that populations have been virtually stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. There was high fertility in most places, but this was usually balanced by high mortality. For most of human history, it was seldom the case that one in ten persons would live past forty, while infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birthrates. Thus, the population problem throughout most of history was how to prevent extinction of the human race.

  This pattern is important to notice. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high mortality.

  Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8,000 BC. till approximately AD. 1650. In the first period of some 9600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and the present, the population has increased from 500 million to more than 4 billion. And it is estimated that by the year 2000 there will be 6.2 billion people throughout the world. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000BC and 1650, an average of only 50,000 persons was being added annually to the worlds population each year. At present, this number is added every six hours. The increase is about 80,000,000 persons annually.

  1. Which of the following demographic growth pattern is most suitable for the long thin powder fuse analogy?

  A. A virtually stable or slightly decreasing period and then a sudden explosion of population.

  B. A slow growth for a long time and then a period of rapid, dramatic increase.

  C. Too many people on earth and a few rapid increase in the number added each year.

  D. A long period when death rates exceeds birthrates and then a short period with higher fertility and lower mortality.

  2. During the first period of demographic history, societies were often in danger of extinction because___.

  A. only one in ten persons could live past 40.

  B. there was higher mortality than fertility in most places.

  C. it was too dangerous to have babies due to the poor conditions.

  D. our ancestors had little enthusiasm for more children.

  3. Which statement is true about population increase?

  A. There might be an increase of 2.2 billion persons from now to the year 2000.

  B. About 50,000 babies are born every six hours at present.

  C. Between 8000 BC and the present, the population increase is about 80,000,000 persons each year.

  D. The population increased faster between 8000BC and 1650 than between 1650 and the present.

  4. 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.

  5. The word demographic in the first paragraph means___.

  A. statistics of human.

  B. surroundings study.

  C. accumulation of human.

  D. development of human.

  答案:ABADA

  

国产福利福利视频_91麻豆精品国产自产在线_中文字幕观看_欧美毛片aaa激情

            9000px;">

                      久久久久国产精品厨房| 五月天一区二区| 337p日本欧洲亚洲大胆精品| 三级在线观看一区二区| 亚洲人妖av一区二区| 亚洲图片欧美色图| 欧美日韩亚洲综合一区 | 国产麻豆精品视频| 色婷婷亚洲婷婷| 久久影院午夜论| 精东粉嫩av免费一区二区三区| 92国产精品观看| 中文字幕一区日韩精品欧美| 国产亚洲欧美中文| 国产精品电影一区二区三区| 日韩手机在线导航| 成人欧美一区二区三区1314| 亚洲综合成人在线| 国产99久久精品| 中文字幕欧美国产| 3d动漫精品啪啪1区2区免费| 亚洲一级二级三级在线免费观看| 国产精品毛片久久久久久久| 日本在线不卡一区| 2021国产精品久久精品| 国产在线精品一区二区三区不卡 | 国产精品视频第一区| 成人性生交大合| 亚洲色图在线看| 欧美午夜寂寞影院| 久久精品国产久精国产| 中文字幕乱码一区二区免费| 欧美精品一二三四| 国内欧美视频一区二区| 国产喂奶挤奶一区二区三区| 美女视频黄免费的久久 | 国产欧美精品一区aⅴ影院| 99久久精品情趣| 日本不卡的三区四区五区| 欧美午夜一区二区| 久久99久久99小草精品免视看| 中文字幕综合网| 国产精品不卡一区| 久久免费美女视频| 欧美日韩在线不卡| 播五月开心婷婷综合| 欧美大片一区二区| 成人va在线观看| 日本中文一区二区三区| 色综合中文字幕国产| 中文字幕av一区二区三区高| caoporn国产精品| 成人精品视频.| 欧美另类一区二区三区| 国产ts人妖一区二区| 色欧美日韩亚洲| 国产成人av电影在线观看| 国产精品18久久久| 欧美不卡视频一区| 欧美日韩专区在线| 久久99久久99精品免视看婷婷| 久久国内精品视频| 国产精品亚洲专一区二区三区| 国产999精品久久| 日本高清无吗v一区| 日韩欧美国产综合一区| 国产精品丝袜一区| 成人app网站| 91国偷自产一区二区使用方法| 在线观看免费亚洲| 在线不卡一区二区| 中文字幕av一区二区三区| 亚洲不卡一区二区三区| 成人av网站在线观看免费| 国产不卡一区视频| 91啪九色porn原创视频在线观看| 欧美日韩亚洲综合在线| 国产精品久久久久精k8| 成人在线一区二区三区| 日韩欧美激情一区| 亚洲免费成人av| 美女一区二区三区在线观看| 欧美久久久一区| 国产精品久久久久久久久久久免费看| 国产三区在线成人av| 亚洲国产成人av网| 欧美日韩免费不卡视频一区二区三区| 亚洲欧美成人一区二区三区| 欧美中文字幕不卡| 精品午夜久久福利影院| 国产欧美日韩亚州综合 | 日韩免费看的电影| 99久久伊人网影院| 久国产精品韩国三级视频| 国产精品国产三级国产aⅴ原创 | 久久久99久久| 91黄色免费观看| 国产精品一区二区在线观看不卡 | 欧美亚洲综合久久| 黄色成人免费在线| 尤物在线观看一区| 亚洲人成精品久久久久久| 日韩精品最新网址| 欧美色老头old∨ideo| 成人午夜碰碰视频| 久久99久国产精品黄毛片色诱| 中文字幕精品一区二区精品绿巨人| 欧美三日本三级三级在线播放| 琪琪久久久久日韩精品| 国产精品第13页| 精品毛片乱码1区2区3区| 白白色 亚洲乱淫| 精品影视av免费| 欧美精品一区二区三区四区 | 精品视频1区2区| 日日摸夜夜添夜夜添亚洲女人| 一区2区3区在线看| 国产精品卡一卡二| 国产亲近乱来精品视频| 91成人免费在线| 亚洲国产美国国产综合一区二区| 亚洲国产成人自拍| 国产午夜精品久久久久久久| 5566中文字幕一区二区电影| 欧美伦理影视网| 在线日韩av片| 国产成人亚洲综合色影视| 一本大道久久a久久综合婷婷 | 久久精品夜夜夜夜久久| 91精品国产高清一区二区三区 | 亚洲免费在线观看视频| 久久精品国产亚洲aⅴ| 国产精品77777| 色网站国产精品| 日韩精品一区在线| 亚洲精品一区二区三区香蕉| 欧美激情一区二区在线| 7777精品久久久大香线蕉| 国产日韩v精品一区二区| 日韩一区在线播放| 视频一区免费在线观看| 极品少妇一区二区| 亚洲免费伊人电影| 国产综合色视频| 97精品电影院| 日韩欧美激情在线| 日韩欧美色综合| 亚洲男人电影天堂| kk眼镜猥琐国模调教系列一区二区 | 亚洲高清一区二区三区| 韩国精品主播一区二区在线观看| av在线免费不卡| 久久夜色精品一区| 韩国三级电影一区二区| 7878成人国产在线观看| 日韩你懂的在线播放| 一个色妞综合视频在线观看| 成人一区二区三区| 国产精品色哟哟网站| 亚洲综合丝袜美腿| 在线观看欧美黄色| 天天操天天干天天综合网| 久久国产精品99久久人人澡| 欧美日韩国产小视频在线观看| 亚洲精品乱码久久久久久| av在线这里只有精品| 国产精品九色蝌蚪自拍| 国产成人精品综合在线观看| 91亚洲国产成人精品一区二三| 亚洲国产精品v| 在线视频一区二区免费| 91精品国产欧美一区二区| 欧美一级二级三级蜜桃| 国产成人精品1024| 成人av综合在线| 成人性视频免费网站| 日本中文字幕一区二区有限公司| 国产一区二区91| 精品人在线二区三区| 99re亚洲国产精品| 尤物av一区二区| 色拍拍在线精品视频8848| 狠狠久久亚洲欧美| 精品入口麻豆88视频| 国产永久精品大片wwwapp| 亚洲欧美一区二区不卡| 国产精品久久福利| a级精品国产片在线观看| 欧美韩国日本不卡| 精品对白一区国产伦| 波多野洁衣一区| 亚洲精品国产第一综合99久久| 老司机精品视频一区二区三区| 久久精品国产精品亚洲红杏| 99国内精品久久| 亚洲免费在线观看| 日韩一二三四区| 欧美日韩精品欧美日韩精品| 亚洲123区在线观看| 欧美一二三四在线|