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;">

                      美女在线视频一区| 国产精品麻豆欧美日韩ww| 麻豆国产精品一区二区三区| 亚洲精品伦理在线| 国产精品毛片久久久久久久| 中文字幕第一区二区| 国产精品天美传媒| 亚洲男人的天堂在线aⅴ视频| 亚洲欧美另类综合偷拍| 国产亚洲欧洲997久久综合 | 欧美日韩一区二区三区高清| 欧美亚洲禁片免费| 91精品国产综合久久香蕉麻豆| 91精品国产综合久久香蕉麻豆| 日韩一区二区免费高清| 欧美不卡一二三| 国产三级久久久| 亚洲精品综合在线| 日韩一区精品视频| 国产在线国偷精品产拍免费yy| 成人免费看视频| 欧美视频精品在线| 精品国产乱码久久久久久牛牛| 国产丝袜美腿一区二区三区| √…a在线天堂一区| 亚洲高清久久久| 国产毛片一区二区| 99精品国产热久久91蜜凸| 日本高清无吗v一区| 欧美男女性生活在线直播观看| 精品伦理精品一区| 1024国产精品| 久草中文综合在线| 99国产精品一区| 日韩精品一区二区在线| 亚洲欧美一区二区在线观看| 首页国产欧美日韩丝袜| 成人av网站在线| 日韩女优视频免费观看| 中文字幕一区二| 精品在线一区二区三区| 欧美影院午夜播放| 欧美激情一二三区| 香蕉成人啪国产精品视频综合网| 国产一区视频网站| 欧美日韩精品久久久| 国产精品视频麻豆| 久久黄色级2电影| 欧美中文字幕一区二区三区亚洲| 精品久久久久久亚洲综合网| 亚洲免费av网站| 东方欧美亚洲色图在线| 日韩欧美中文字幕制服| 自拍偷拍国产精品| 国产精品白丝av| 日韩欧美专区在线| 亚洲成人av福利| 色综合久久66| 国产精品久久久久久妇女6080| 韩国精品主播一区二区在线观看| 欧美系列日韩一区| 国产精品免费看片| 国产精品一级二级三级| 精品三级在线看| 蜜臀av性久久久久蜜臀av麻豆 | 精品国产乱码久久久久久蜜臀| 一区二区三区日韩欧美精品| 成人午夜激情视频| 国产日韩欧美亚洲| 激情丁香综合五月| 88在线观看91蜜桃国自产| 一区二区三区不卡在线观看| 不卡大黄网站免费看| 久久久www免费人成精品| 久久国产人妖系列| 欧美一级免费观看| 男男视频亚洲欧美| 在线不卡一区二区| 亚洲成人在线网站| 91麻豆精品国产91久久久久久久久| 亚洲综合精品自拍| 91在线视频播放| 亚洲日本成人在线观看| 91在线精品一区二区| 成人免费在线视频| 欧美在线一二三| 亚洲国产va精品久久久不卡综合| 欧美日韩亚州综合| 日韩国产欧美一区二区三区| 日韩欧美精品三级| 国产精品 日产精品 欧美精品| 国产欧美一区二区精品久导航| 盗摄精品av一区二区三区| 国产精品免费久久久久| 色婷婷一区二区| 偷拍一区二区三区四区| 日韩免费视频线观看| 国产一区二区三区高清播放| 国产欧美日本一区视频| 91在线视频在线| 亚洲综合图片区| 日韩欧美在线观看一区二区三区| 国产激情视频一区二区三区欧美| 成人免费一区二区三区视频 | 欧美一区二区三区系列电影| 国内久久精品视频| 亚洲男女一区二区三区| 日韩精品中文字幕在线一区| 成人动漫视频在线| 亚洲综合999| 精品99999| 在线亚洲精品福利网址导航| 免费人成在线不卡| 自拍偷拍亚洲综合| 欧美电影免费观看高清完整版在线观看| 国产福利一区二区三区视频在线| 精品国产免费视频| 欧美成人精品福利| 不卡区在线中文字幕| 亚洲sss视频在线视频| 色中色一区二区| 视频一区中文字幕国产| 制服丝袜中文字幕亚洲| 五月婷婷另类国产| 久久久亚洲精品一区二区三区| 不卡av电影在线播放| 一区二区三区高清| 日韩欧美黄色影院| 亚洲国产你懂的| 色88888久久久久久影院按摩| 久久电影网电视剧免费观看| 亚洲精品成人天堂一二三| 亚洲精品一区二区三区99| 色综合天天做天天爱| 国产精品综合一区二区三区| 国产精品99久久久| 不卡一区二区在线| 日韩精品欧美精品| 精品久久免费看| 97精品电影院| 成人精品国产一区二区4080| 一区二区三区四区在线播放| 国产三级欧美三级日产三级99 | 精品一区二区免费看| 久久久不卡网国产精品一区| 在线免费观看日本欧美| 成人黄色小视频| 麻豆精品视频在线观看免费| 亚洲国产精品一区二区久久恐怖片 | 亚洲大片一区二区三区| 美女在线一区二区| eeuss鲁一区二区三区| 国产精品久久免费看| 紧缚奴在线一区二区三区| 亚洲欧美另类久久久精品2019| 国产精品视频看| 国产午夜精品一区二区三区四区| 欧美成人三级电影在线| 日韩欧美综合一区| 精品国产在天天线2019| 日韩精品一区在线| 日韩美女一区二区三区| 欧美三级午夜理伦三级中视频| 激情综合色综合久久综合| 国产精品护士白丝一区av| 国产女主播视频一区二区| 国产日产亚洲精品系列| 久久亚洲免费视频| 91视频www| 欧美性三三影院| 精品99一区二区| 免费在线欧美视频| 国产成人免费在线观看不卡| 依依成人精品视频| 久久综合九色欧美综合狠狠| 欧美精品久久天天躁| 不卡的av电影在线观看| 精品一区二区三区不卡| 日精品一区二区三区| 亚洲大型综合色站| 中文在线一区二区| 日韩免费观看高清完整版| 自拍偷在线精品自拍偷无码专区| 欧美精品久久一区| 欧美日韩一区小说| 一本色道久久综合精品竹菊| 国产乱码精品一品二品| 麻豆久久一区二区| 日韩国产在线观看一区| 日韩国产成人精品| 男女男精品网站| 美女被吸乳得到大胸91| 奇米影视在线99精品| 久久精品久久99精品久久| 蜜臀久久久久久久| 精久久久久久久久久久| 国产成人自拍网| proumb性欧美在线观看| 色爱区综合激月婷婷| 欧美男人的天堂一二区|