何凯文每日一句：2018考研英语第169句

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2018何凯文每日一句上线，考生们可关注文都考研网，了解每日一句具体内容。每一场考研路都有成败，希望考生们能不忘初心，坚持当初决定考研的信仰。何凯文每日一句会全程陪伴考生，走完2018考研路。对于考研英语的复习，必然是长期积累夯实基础的过程，针对考研英语复习，小编也会及时整理推送相关内容。以下是第169句：
　　【温馨推荐】何凯文每日一句：2018考研英语汇总(KK精讲)
　　今天的句子：
　　As trade and human travel has become globalised many thousands of species have crossed oceans or mountain ranges and become established in new regions, with some causing “invasional meltdown” and over a trillion of dollars of damage a year. Recent research shows that ever more animals and plants are finding their way to foreign lands and that invasive species are a “primary threat” to economies, human wellbeing and wildlife.
　　The reason animals and plants can find their way to foreign lands is ____.
　　(A) the invasive species are a “primary threat” to  our life as recent research shows
　　(B) huge amount of damage has been caused by the invasive species  a year
　　(C) the mass immigration of human being combined with the global trade business.
　　(D) the species established in new regions can improve the human wellbeing
　　句子的解析：
　　词汇突破
　　1.globalized 全球化的
　　2.species 物种
　　3.invasion 入侵
　　4.meltdown 崩溃
　　5.trillion 万亿
　　6.primary 首要的
　　7.wellbeing 福利
　　8.wildlife野生动植物
　　第一句：
　　确定主干：
　　many thousands of species have crossed oceans or mountain ranges and become established in new regions.
　　切分成分：
　　1.As trade and human travel has become globalised状语从句
　　2..with some causing “invasional meltdown” and over a trillion of dollars of damage a year伴随状语
　　第二句：
　　确定主干：
　　Recent research shows…
　　切分成分：
　　1.that ever more animals and plants are finding their way to foreign lands
　　宾语从句一
　　2.that invasive species are a “primary threat” to economies, human wellbeing and wildlife
　　宾语从句二
　　参考译文：国际商贸和旅行令数千物种跨越海洋或山脉，在新的地区扎根繁衍。其中一些物种发展成“入侵灾难”，每年损失高达万亿。最近的调查显示，更多动植物正在“走向”异域，入侵物种是对经济、人类及野生动植物的“首要威胁”。
　　背景介绍：
　　科学家警告说，物种入侵和全球变暖是一对并肩作战的“夺命二人组”。人类的频繁迁徙让物种越来越有可能进入新的地域，而气候变暖则推动许多异域物种在原本水土难服的环境中恣意生长。阿根廷蚁在英国的肆虐就是一个新的例证。这种蚁通常生长在室内，然而气候变暖使得它们逐渐可在野外生存。没有天敌和环境的约束，这些自由的入侵大肆繁殖，并通过层叠效应影响了整个生态生态圈的稳定。每年英国因物种入侵而遭受的经济损失高达数十亿英镑。