下面小编跟大家一起了解考研英语阅读重点短文分享，希望对大家的学习有所帮助。
　　While human digestion can't accommodate my pit, your hands can,and I was able to achieve even wider distribution via the thumb-carrying Homo sapiens who ate me and tossed my seed here and there.
　　虽然人类的消化系统不能容纳我的果核，但是你们的手可以，我们能够通过长有拇指的智人实现更广泛的分布，他们吃了我，把我的种子扔得到处都是。
　　“Particulate matter is extremely harmful and it leads to a large number of premature deaths,”said Richard L. Revesz, an expert in environmental law at New York University.He called the expected change a “monumental departure”from the approach both Republican and Democratic E.P.A. leaders have used over the past several decades
　　“微粒物质危害极大，会导致大量人口早逝，”纽约大学环境法专家查理·里弗斯说道。他称这一预料之中的变化“严重背离”了环保署过去数十年来横跨两党的各届领导人一直沿用的方法，
　　and predicted that it would lay the groundwork for weakening more environmental regulations.“It could be an enormously significant impact,” Mr. Revesz said.
　　他还预测，这一改变将奠定下日后撼动其他环保规定的基础。“可能因此造成巨大的影响，”里弗斯说。
　　The Obama administration had sought to reduce planet-warming greenhouse gas emissions under the Clean Power Planby pushing utilities to switch away from coal and instead use natural gas or renewable energy to generate electricity.The Obama plan would also have what is known as a co-benefit: levels of fine particulate matter would fall.
　　曾试图通过清洁能源计划推动公用事业公司脱离煤炭，转用天然气或可再生能源发电，籍此减少温室气体的排放。这一方案还能带来一大衍生利益：降低细颗粒物的水平。
　　It would also allow older coal plants to remain in operation longer and result in an increase of particulate matter.
　　但该规定允许老旧的燃煤电厂继续运营，势必增加空气中颗粒物的含量。
　　Particulate matter comes in various sizes.The greatest health risk comes from what is known as PM 2.5, the range of fine particles that are less than 2.5 microns in diameter.That is about one-thirtieth the width of a human hair.
　　颗粒物有各种大小。其中，对健康威胁很大的是pm2.5，即直径小于2.5μm的细颗粒物。这一直径大致相当于人类头发宽度的三十分之一。
　　The E.P.A. has set the safety threshold for PM 2.5 at a yearly average of 12 micrograms per cubic meter.While individual days vary, with some higher,an annual average at or below that level, known as the particulate matter standard, is considered safe.
　　环保署给pm2.5设置的浓度限值为年平均浓度12μg/m3。虽然个别天数有所不同，有时更高，但年平均水平处于或低于该水平(即颗粒物标准)时，空气质量即为优。
　　However, the agency still weighs health hazards that occur in the safe range when it analyzes new regulations.Industry has long questioned that system.After all, fossil fuel advocates ask,why should the E.P.A. search for health dangers, and, ultimately, impose costs on industry,in situations where air is officially considered safe?