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1、1,Text 24,More people and more produces,2,New words and phrase :,1 、 Approximately adv. 近似，大约 Vocabulary building(词汇扩充): about , give or take, more or less , or so , or thereabouts , roughly ,somewhere around,3,somewhere regional of, etc. 例句：The flight takes approximately three hours. 飞行时间大约三个小时。 Sh
2、e must be 25 or thereabouts. 她肯定在25岁上下。,4,2、 epidemic n. 流行病 例句：the outbreak of a flu epidemic. 流感的爆发。 epidemiology n. 流行病学 epidemiological adj. epidemiologist n.,5,3 plague n. v. plague sb/sth (with sth) . 使受煎熬 4 significantly adv. 有重大意义的；显著地 Significant adj. significance n.,6,5、 considerably adv.
3、considerable adj. 相当多(或大,重要等的) considerate adj. 考虑周到的 consideration n. 仔细考虑,7,6、 preservation n. 保护；维护 preservationist n. 文物保护者，环境 保护者 preservation order 文物保护令（英国） preservative n. 防腐剂 例句：wood preservative 木材防,8,7、 transportation n. 例句：the transportation of industry 运输业 transport n. v. 交通运输系统 运输（交通工具
4、） 8 、security n. a sense of security . 安全感 in security for 作为的担保 secure a. 安全的；稳固的 v. 使安全；取得,9,9 、advantage n. be work to your advantage 对有利 v. 有利于 take advantage of sb/sth 利用 to (good/best) advantage 有效的，使优点突出 turn sth to your advantage 变不利为有利 advantaged adj. 处于优越地位的 advantageous adj. 有利的；有好处的,10,1
5、0 、concentrate v. n. concentrate (sth)（on sth /on doing sth）聚精会神做某事 n. 浓缩物 Concentration n. 专心 concentrated adj. 决心要做的,11,11、 enrich v. 使富裕 ，丰富 enrich sth (with sth) enrichment n. 12 、fertilizer n. 肥料 fertilize v. 使受精，受粉 fertility n. 富饶 fertile adj. 肥沃的 13 、profitable a. 有利润的；盈利的 profit v. n. profit
6、 on sth /from sth 利润 profit (by/from sth) 对有益,12,14、 feasible a. 可实行的 feasibility n. 例句：I doubt the feasibility of the plan. 我怀疑这个计划的可行性。 15、 specific adj.明确的，具体的 specifically adv. 明确的，具体的 specification n. 规格，说明书 16、 constant adj. n. 常数，量 constant interruptions 无休止的干扰 constancy n. 稳定性 constantly adv
7、. 一直，始终,13,17 、assemble v.装配 assembler n. 装配工 assembly n. 会议 State/local assemblies 州众议院 18 、supervise v. 监督 supervision n. supervisor n. 监督人 supervisory adj.,14,19 、specialize v. 专政 specialized adj.专业的 specialized equipment/skills 专业设备/技能 20、 replace v. take the place of 代替 replace sb /sth (with/by
8、 sb/sth) 用代替 replaceable adj. 可替换的,15,21、 campaign n. v. .(against/for sth) campaign 指为社会，商业， 政治目的而进行的一系列活动。 A advertising campaign 广告宣传活动 Battle 指个人或集体为赢得权利或控制而进行的较量，争论 The endless battle between man and native . 人与自然永无休止的斗争。 Struggle 指个人或集体为赢得权利或斗争而进行的较量，争论或斗争。 The struggle between good and evil.
9、正邪之争,16,. Pre-reading activities:,1、tell your classmates what you know about world population. 2、what are the differences between living in the rural areas and in modern cities ?,17,The world population :,In 1995 the total number of the worlds population is 57 million. Presumably, the global annual
10、increase of population will remain at 86 million or more. 2015 world population will reach 71 78 million; 2025 to exceed 80 billion; 2050 will reach 9.4 billion. According to scientists, the analysis of the 2080 world population will peak, 106 million, will gradually decline thereafter, to the 21st
11、century, fell to 10.35 billion.,18,19,modern cities:,Rural areas :,20,. Text explaining:,Stands at 达到 at a stand 停顿 stand at ease 稍息 stand at gaze 站着呆望 stand aghast at 被 . 吓一跳; 被 stand ones trick. 值班 stand at attention v. 立正,21,1、Today although the birth rate has not changed significantly, the death
12、 rate has been lowered considerably by various kinds of progress. Today, the birth rate has not increased greatly, but the death rate has been much lowered than before because many kinds of progress are made.,22,2、Improvement in communications and transportation has made it possible to send more foo
13、d from the place where it is produced to other places where it is needed. Communications and transportation have been improved ,thus it is possible to send more food from the places where it is produced to where it is needed.,23,dry monsoon 冬季风 wet monsoon 夏季风,24,3、In Europe and North America, the g
14、rowing population has had the advantage of greater quantities of natural resources and food .however, in some places, such as the monsoon countries of Asia ,the birth rate has always been high . In Europe and North America, due to the agreeable condition of rich natural recourses and food ,the popul
15、ation grows very quickly. However in some places ,such as those Asian countries where there is periodical wind ,the birth rate has always been very high too.,25,This is the Chinese ancestors migration roadmap!,26,4、 This is a more feasible type of operation because modern methods and machinery are a
16、dapted to specific animal and specific crops., This operation is a suitable one because modern methods and machinery are fit to feed certain animals and to grow certain crops.,27,“Trail of Tears”,28,Phrase,1、enable sb. to do sth. 使某人做某事 2、five times as much as 是的五倍 3、be obtained from 从获得,29,Energy,30,5、 The less specialized workers are gradually being re
