第076句:工农业效率
Furthermore, it is obvious that the strength of a country s economy is directly bound up with the efficiency of its agriculture and industry, and that this in turn rests upon the efforts of scientists and technologists of all kinds.
译文：再者，显而易见的是，一个国家的经济实力与其工农业效率直接相关，而效率的提高则有赖于各类科学家和技术专家的努力。
点睛：该句中it是句子的形式主语，真正的主语是两个由that引导的并列的主语从句。第二个逗号后的this指代的是第一个主语从句中的the efficiency of its agriculture and industry.be bound up with意为“与…紧密相关”。in tum此处意为“反之，反过来”。rest upon意为“依赖于”。
考点归纳：与名词turn相关的常见短语还有：
be one’s turn( to do sth.) 轮到某人（做某事）
It’s your turn to read the article.
轮到你念文章了。on the turn在转变之中
Maybe my luck is on the turn.
也许我要转运了。by turns依次，轮流地
That night you were silly,witty and mournful by turns.
那天晚上，你先是傻乎乎的，然后变得很风趣，最后又悲伤起来。
第077句:社会压力
Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements-themselves made relatively easy nowadays by modem means of transport.
译文：新的社会压力可能会由于人口爆炸或大规模人口迁移而出现，而现代交通工具使得这种人口迁移变得比较容易。
点睛：该句的主干是additional social stresses may occur...。because of引导的是句子的原因状语，其中现在分词短语arising from...作problems的后置定语。破折号后的内容是对mass migration movements的解释说明，其中themselves指代的就是migration movements。modern means of transport意为“现代交通工具”。
考点归纳：arise、arouse、raise和rise的区别如下：
arise是不及物动词，意为“出现，呈现”，常与介词from连用。
As we sped down the highway, the lights of the city arose before us，
我们在公路上疾驰时，城市的灯光映入眼帘。arouse是及物动词，意为“引起，激起”。
Such behavior may arouse the interest of others.
这样的行为可能会引起别人的兴趣。raise是及物动词，意为“提高；抚养”。
The government tried to raise taxes.
政府试图提高税收。
Mary was born and raised a country girl.
玛丽是在农村出生和长大的女孩。rise是不及物动词，意为“增加，上升”。
House prices are likely to rise this year.
今年房价可能会上涨。
第078句:补考
Your math instructor would have been happy to give you a makeup examination had you gone and explained that your parents were ill at the time.
译文：如果你当时解释说你的父母那时都生病了，数学老师就会愿意让你补考的。
点睛：本句是省略if的虚拟条件句，助动词had前置构成了倒装。条件状语从句采用了过去完成时表示对过去事实的假设，主句的谓语部分相应地采用了would have done的形式。
考点归纳：虚拟语气表示一种假想或主观愿望，一般有以下几种情况：
用动词原形表虚拟。
God bless you.愿上帝保佑你。用过去时表虚拟，表示与现在事实相反；若谓语为系动词be则一律用were。
If only l were not so nervous.
我要是不那么紧张就好了。用过去完成时表虚拟，表示与过去事实相反。
1 wish I hadn't done so.
真希望我当时没那样做。
第79期:媒体公司
Were the New York Times Co. to purchase another major media company, there is no doubt that it could dramatically transform a family-run enterprise that still gets 90% of its revenues from newspapers.
译文：如果纽约时报公司要收购另一家大型媒体公司，这将无疑使一个收入的90%都来自报纸的家族企业发生巨大的转变。
点睛：were...media company是省略if的虚拟条件从句的倒装形式，表示对现在事实的假设。No doubt意为“毫无疑问”。该句有两个that，第一个that引导的是同位语从句；第二个that引导的是以enterprise为先行词的定语从句。
考点归纳：doubt此处为名词，意为“怀疑”，与其相关的常见搭配还有：
be in doubt不太有把握
The future of our school is in doubt.
我们学校的前途难以预料。be beyond doubt确定无疑
I know your integrity is beyond doubt.
我知道你的诚实是不用怀疑的。without doubt确实
Lisa is without doubt the best singer in our class.
莉萨确实是我们班里唱歌最好的。
第80期:穷人和富人
As long as poor people, who in general are colored, are in conflict with richer people, who in general are lighter skinned, there's going to be a constant racial conflict in the world.
译文：只要穷人和富人（也就是一般的有色人种和白色人种）之间存在矛盾，世界上的种族冲突就将持续存在。
点睛：该句是一个复合句。主句的谓语部分采用be going to do的形式，表示将来的概念。整句话包含有三个从句：as long as...引导的是条件状语从句，意为“只要…”；第一个who引导的是以poor people为先行词的定语从句；第二个who引导的是以richer people为先行词的定语从句。短语in conflict with意为“与…有冲突”。
