其实最简单的是<科普英语>,这个还有比赛的,科技知识比较强,但是还蛮耐懂的
另外呢,科普类书籍不要买专业性太强的
那个全称是《趣味科普英语》，本书是一本新颖的英语课外读物，就英语学习而言，本书的语言力求简洁明了、易懂易学，以最简单的英语语言来传授深奥的科技知识，达到普及科技知识与提高英语学习的双重目的。
华夏出版社出版，许德金主编
这套分级英语科普读物，才是英语启蒙必备，3-10岁都能用
温室效应的行不行呢？(GLOBAL WARMING)
Everywhere you look right now you will hear about the pheonomia of “global warming” To understand global warming you need to understand the difference between climate and weather Climate, as defined by Webster’s Dictionary is “the average course or condition of the weather at a place over a period of years as exhibited by tepemperature, wind velocity, and precipition” while weather is the “state of the atmosphere with respectto heat or cold, wetness or dryness, calm or storm, clearness or cloudiness” (Webster) Therefore climate describes the weather over time Climate change and global warming are frequently used interchangeable but like climate and weather they do have different definitions “Climate change refers to any significant change in measures of climate for an extended period” and global warming is an increase in the temperature of the atmosphere near the Earth's surface and in the troposphere, which can contribute to changes in global climate
Global warming is caused by several causes such as pollution from factories, carbon dioxide from rotting trees, the burning of coal, natural gasses and fossil fuels lead to methane travelling into the Earth's atmosphere any transportation vehicles, water vapour, and many other little things, which contribute to make global warming even worse
Scientists have different opinions about whether the current global warming is natural or unusual Some believe that it is part of the Eath's natural cycle of warming and cooling However most believe that what we are now experiencing is unusual and has been caused by human activities
Another great contributor to Global Warming is water Vapour You may be thinking how does water vapour contribute to Global Warming, well the answer is water vapour does not directly contribute to Global Warming It contributes to the Greenhouse Effect, which then leads to Global Warming In fact, water vapour makes up sixty percent of the Greenhouse gasses, twenty percent is carbon dioxide and the other twenty percent is caused by nitrous oxide , methane , ozone and other varieties of gasses
We can help to reduce the Green House Gas （GHG） emmissions in order to help to stop the global warming and climate change
科普英语的内容
0-7岁是孩子接触第二语言的最好时期。这个年龄段，孩子大脑快速发育，听到的语音能够毫不费力地在他的大脑里留下深刻的印象，学得非常快。
这也是为什么很多父母会在1岁左右，给孩子做英语启蒙的原因了。
那么，普通父母都是怎么给娃做英语启蒙的呢？
答案是 先听再读 ！
语言学习通常是按照“听说读写”进行的，先“听”，在听的过程中获得大量的语言输入，然后再开口“说”。
孩子出生没多久，父母就开始教他喊“爸爸、妈妈”，直到十个多月以后，他才能真正说出来。可见，在孩子真正可以流利表达之前，需要很长一段时间来做语言的储备。
英语启蒙也是一样的，只有孩子多听、多积累，有了足够的输入，才能自然而然地表达出来，输出更多内容。
分享3个英语启蒙的小方法，想要给娃英语启蒙的父母可以试试看。
1、听音频
英国爱丁堡大学莱德音乐学院的研究小组发现， 唱外语歌可以让学习者的口语成绩提高一倍以上 。
原汁原味的英语儿歌、童谣，一直都是英语启蒙中的重中之重，既能激发孩子对英语的兴趣，又能培养孩子的语言韵律节奏感和音素意识。
儿歌推荐： “Baby Shark”、“Wheels on the Bus”、“Old MacDonald Had a Farm”、“Bingo”、“Row, Row, Row Your Boat”、“Twinkle, Twinkle Little Star”、“If Happy and You Know It”……
2、看动画片
大部分孩子都喜欢看动画片，不只是单纯地看，他们还会模仿学习，把里面的画面、声音和语言联系在一起，逐渐内化，丰富自己的词汇和句式表达。
动画片推荐： 《Little Charley Bear》、《Pink Fong》、《Nelly&Nora》、《Big Muzzy》、《Yakka Dee》、《Baby Riki》……
3、读分级读物
等听力积累到一段时间以后，就可以引导孩子阅读了。只是绘本和分级读物，应该选哪个呢？
很多家长都在纠结这个问题，其实绘本和分级读物的侧重点完全不同。
绘本是用图画书来讲故事，制作精美，画面感足，趣味性强，更能吸引孩子的兴趣；分级读物图画简单，趣味性弱，但是功能性强，更适合孩子认识单词，熟悉句型，培养他们的自主阅读能力。
也就是说，给娃做英语启蒙，可以把绘本和分级读物结合起来，搭配使用。比如先通过绘本激发兴趣，培养习惯，再通过分级读物认识单词，提高阅读能力。
分级读物推荐：《Highlights科普英语阅读系列》。
这是一套科普分级读物，是由风靡全球75年的 Highlights 出版公司研发出品。
Highlights出版公司创办于1946年，是美国 历史 悠久、获奖众多、目前发行量最高的儿童杂志出版社。迄今为止，Highlights书籍总发行量已经超过10亿册，并被40多个国家引进出版。
《Highlights科普英语阅读系列》是专为3-10岁孩子打造的科普分级读物，充分运用了二语习得理论，非常适合非英语母语国家的儿童使用。
这个系列分成了6级，每个级别18本，一共108本，一本一个主题。
内容涉及了动物、植物、海洋、气象、宇宙、地质、文化、 体育 、环保、工程等等，并涵盖了天文地理、生命自然、物理常识三大类。主题丰富、科普全面，完美满足了孩子广泛的好奇心，并提高了他们的知识面和视野。
书里的非常精致，使用的都是高清大图，树叶的纹络都能看得一清二楚；重点单词颜色醒目，让人一目了然，清晰看到并学习；每本书的最后，还有单独的单词表，对应实物，轻松学习，深刻记忆。
同其它分级读物一样，这个系列也使用了双螺旋上升结构——6个级别分别标志了蓝思指数、难度指数和适合年龄，还被分成了3个等级： 预备级、基础级、进阶级 ，家长可以根据孩子的年龄和英语的学习状况来选择。
内容虽多，学起来却不困难，整个系列学下来，可以掌握1000多个实用词汇。
就拿我家孩子来说，我家孩子今年6岁，按照年龄应该读三级，但是他英语启蒙较晚，只能从一级开始，前几天刚把一级读完，下个月开始读二级。
这个系列还有2个亮点：一个是 原版音频 ，手机扫一扫，就能免费收听，音质特别好，孩子非常喜欢；一个是趣味 app ，手机扫一扫，下载APP，里面既有原版美音朗读、趣味 游戏 挑战，还有中英双语对照和成果激励系统，引导孩子不断挑战，学习更多内容。
我家孩子最喜欢里面闯关打卡 游戏 ，每次闯关成果，都非常兴奋，迫不及待地想要继续玩下去，不知不觉，几本书就读完了。
这个系列的分级英语科普读物，才是英语启蒙必备，3-10岁都能用，超值！有兴趣的家长可以点击链接带回家~
求一篇一百字左右的英语科普文，越简单越好，是科普类型就好，初中、小学水平都可以，及翻译
暗银河系的发现及其科学意义
In addition to conventional galaxies, the universe contains very dim galaxies that until recently went unnoticed by astronomers Possibly as numerous as conventional galaxies, these galaxies have the same general shape and even the same approximate number of stars as a common type of conventional galaxy, the spiral, but tend to be much larger Because these galaxies ’mass is spread out over larger areas, they have far fewer stars per unit volume than do conventional galaxies Apparently these low-surface-brightness galaxies, as they are called, take much longer than conventional galaxies to condense their primordial gas and convert it to stars—that is, they evolve much more slowly
These galaxies may constitute an answer to the long-standing puzzle of the missing
baryonic mass in the universe Baryons—subatomic particles亚原子粒子 that are generally protons or neutrons—are the source of stellar, and therefore galactic, luminosity, and so their numbers can be estimated based on how luminous galaxies are However, the amount of helium in the universe, as measured by spectroscopy光谱学, suggests that there are far more baryons in the universe than estimates based on galactic luminosity indicate Astronomers have long speculated that the missing baryonic mass might eventually
be discovered in intergalactic space星系际的空间 or as some large population of galaxies that are difficult to detect
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
另类海豹哺乳方式与众不同
Until recently, zoologists believed that all species of phocids (true seals), a pinnipped family, use a different maternal strategy than do otariids (fur seals and
sea lions), another pinniped family Mother otariids use a foraging strategy They acquire moderate energy stores in the form of blubber before arriving at breeding sites and then fast for 5 to 11 days after birth Throughout the rest of the lactation (milk production) period, which lasts from 4 months to 3 years depending on the species, mother otariids alternately forage at sea, where they replenish their fat stores, and nurse their young at breeding sites Zoologists had assumed that females of all phocids species, by contrast,
use a fasting strategy in which mother phocids, having accumulated large energy
stores before they arrive at breeding sites, fast throughout the entire lactation period, which lasts from 4 to 50 days depending on the species However, recent studies on
harbor seals, a phocids species, found that lactating females commenced foraging
approximately 6 days after giving birth and on average made 7 foraging trips during the remainder of their 24-day lactation period
The maternal strategy evolved by harbor seals may have to do with their small size and the large proportion of their fat stores depleted in lactation Harbor seals are small compared with other phocids species such as grey seals, all of which are known to fast for the entire lactation period Studies show that mother seals of these species use respectively 84 percent, 58 percent, and 33 percent of their fat stores during lactation By comparison, harbor seals use 80 percent of their fat stores in just the first 19 days of lactation, even though they occasionally feed during this period Since such a large proportion of their fat stores is exhausted despite feeding, mother harbor seals clearly cannot support all of lactation using only energy stored before giving birth Though smaller
than many other phocids, harbor seals are similar in size to most otariids In addition,
there is already some evidence suggesting that the ringed seal, a phocids species that
is similar in size to the harbor seal, may also use a maternal foraging strategy
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
pheromones是什么东东，是不是该划为odorant
There is no consensus among researchers regarding what qualifies a substance as a pheromone While most agree on a basic definition of pheromones as chemicals released by one individual of a species which, when detected by another individual of the same species, elicit a specific behavioral or physiological response, some researchers also specify that the response to pheromones must be unconscious In addition, the distinction
between pheromones and odorants—chemicals that are consciously detected as odors---can be blurry, and some researchers classify pheromones as atype of odorant Evidence that pheromone responses may not involve conscious odor perception comes from the finding that in many species, pheromones are processed by the vomeronasal (or accessory olfactory) system, which uses a special structure in the nose, the vomeronasal organ (VNO),to receive chemical signals The neural connections between the VNO and the brain are separate from those of the main olfactory system, whose processing of
odorants triggers sensations of smell But while the VNO does process many animal
pheromone signals, not all animal pheromones work through the VNO Conversely,
not all chemical signals transmitted via the VNO quality as pheromones For example,
garter snakes detect a chemical signal from earthworms—one of their favorite foods—via
the VNO, and they use this signal to track their prey
－－－－－－－－－－－－－－－－－－－－－－－－－－－－
PUBLIC ATTITUDES TOWARD SCIENCE
Anyway, even if one wanted to, one couldn't put the clock back to an earlier age Knowledge and techniques can't just be forgotten Nor can one prevent further advances in the future Even if all government money for research were cut off (and the present government is doing its best), the force of competition would still bring about advances in technology Moreover, one cannot stop inquiring minds from thinking about basic science, whether or not they are paid for it The only way to prevent further developments would be a global state that suppressed anything new, and human initiative and inventiveness are such that even this wouldn't succeed All it would do is slow down the rate of change
