资料:It’s easy to trace the evolution of the automobile.At most,we’re only talking about a few centuries of technological development,and most of the plans,prototypes and models are still around. With

题目
资料:It’s easy to trace the evolution of the automobile.At most,we’re only talking about a few centuries of technological development,and most of the plans,prototypes and models are still around. With just a little research,you can easily trace the latest model electric hybrid back to its steam-powered ancestors.
Your family tree is probably a different matter. Even an extensive genealogy chart can only reach back so far,and mortality puts a rather strict limit on exactly how many “models” are still on the road. Humanity’s evolutionary progression is even more difficult. We still have plenty of living primate relatives,but many of the life forms that connect the evolutionary dots are long extinct.
Evolutionary biologists use several methods to decipher exactly how we came to be as we are.In fact,the field itself encompasses several different disciplines in addition to biology,like genetics,psychology,geology,archaeology linguistics,anthropology and primatology just to name a few. Naturally,paleoanthropology also plays a key role,as we have to turn to the fossil record for many clues about our ancient primate,human and nearly human ancestors.
While the fossil record by its very nature is incomplete,there’s no shortage of fossil evidence to link the planet’s varied life forms into a great tree of life, a chart that scientists call a phylogenetic tree. You can think of humans as the very tip of just one branch on that tree called “hominid.” Chimpanzees exist at the end of an adjoining branch called “panin.” Follow both the hominid and panin branch back about 5.4 million years, and you’ll find a point where scientists think the two converged from a single,common ancestor.
Fossil evidence helps scientists to reconstruct these trees,but so do morphological and genetic studlies. Genetic analysis has yielded striking similarities between chimps and humans. As such, scientists know a last common ancestor of chimps and humans existed,even if we’ve yet to determine the exact species. Yet paleoanthropologists have found numerous hominid fossils to bridge the evolutionary progression from that unknown common ancestor to modern humans. These finds include such famous East African fossils as Lucy(Australopithecus afarensis),which strengthened the importance of bipedalism in human evolution and proved an essential milestone on our way to modern Homo sapiens.
Fossil evidence for human evolution will never be complete,as fossils themselves are rare geologic occurrences.Nevertheless,by incorporating other scientific disciplines,we’re able to build an increasingly accurate picture of just what our evolutionary family tree consisted of.

What can be inferred from Para.5?

A.Morpholoical and genetic studies helped scientists to trace unknown common ancestor of chimps and humans existed.
B.Morphological and genetic studies determined exact species of common ancestor of chimps and humans existed.
C.Genetic studies found hominid fossils to bridge the evolutionary progression from unknown common ancestor to modern humans.
D.Morphological studies helped finding the famous East African fossils and set up an milestone in this field.
如果没有搜索结果或未解决您的问题,请直接 联系老师 获取答案。
相似问题和答案

第1题:

A startup company in California is using machine learning and arificial itelligence to advise fire departments about how to plan for earthquakes and respond to them. The company hopes its algorithms can take a lot of the guesswork out of the planning process for disaster response by making accurate predictions about earthquake damage. I's one of a handful of companies rolling out atificial itelligence and machine learning systems that could help predict and respond to foods, cyber-attacks and other large- scale disasters.
Nicole Hu, the company's chief technology oflicer, says the key is to feed the computers three mam categories of data. The first is data about homes and other buildings, such as what materials they're made of, when they were built and how likely they are to collapse when the ground starts shaking. The next category is data about the natural environments. For example. "What is the soil like" What is the elevation like? What is the general humidity like?" explains Hu. The third thing we look at is live instant data." she says, such as the magnitude of the quake, the trafic in the area of the quake and the weather at the time of the quake. The computer uses the information to make predictions about what would happen if an earthquake occurred in a particular area. It then uses data from past earthquakes to see whether its predictions are any good, and revises its predictive models accordingly. In other words, it learns as it gocs, which is basically how machine learning works.
Stanford University earthquake engineer Gregory Deierlein consulted for the company. He says one of the most remarkable things about the company's software is its ability to incorporate data from an earthquake as its happening. and to adjust its predictions in real time. "Those sort of things used to be research projects." says Deierlein " After an event, we would collee data and a few years later we' d produce new models." Now the new models appear in a matter of minutes. He note the company's exact methods are opaque. "Like many startup companies they're not fully transparent in everything they're doing." He says.“I mean, that's their proprietary knowledge that they're proprietary knowledge that they're bringing to it."Nonetheless, some first responders are already convinced the software will be useful. Fire chief Dan Ghiorso leads the Woodside Fire Protection District near San Francisco, which covers 32 square miles. The San Andrea's fault is only a couple hundred feet behind the firehouse. Ghiorso says in the past, when an earthquake hit, he 'd have to make educated guesses about what parts of his district might have suffered the most damage, and then drive to each place to make a visual inspection. He hopes the company' s software will change that, although he has yet to put it to the test during an actual quake." Instead of driving thity two square miles, in fifteen minutes on a computer Ican get a good idea of the concerns." he says,“instead of me, taking my educated guess, they re putting science behind it, so I' m very confident." Unfortunately, it's going to take a natural disaster to see if his confidence is justified.
What is the author' s attitude towards the software?


A. Pessimistic
B. Positive
C. Ambiguous
D. Critical

答案:A
解析:
态度题,题目考查作者的态度,根据尾段unfortunately,以及后面的内容可以判断,作者是持有消极的态度的。

第2题:

A startup company in California is using machine learning and arificial itelligence to advise fire departments about how to plan for earthquakes and respond to them. The company hopes its algorithms can take a lot of the guesswork out of the planning process for disaster response by making accurate predictions about earthquake damage. I's one of a handful of companies rolling out atificial itelligence and machine learning systems that could help predict and respond to foods, cyber-attacks and other large- scale disasters.
Nicole Hu, the company's chief technology oflicer, says the key is to feed the computers three mam categories of data. The first is data about homes and other buildings, such as what materials they're made of, when they were built and how likely they are to collapse when the ground starts shaking. The next category is data about the natural environments. For example. "What is the soil like" What is the elevation like? What is the general humidity like?" explains Hu. The third thing we look at is live instant data." she says, such as the magnitude of the quake, the trafic in the area of the quake and the weather at the time of the quake. The computer uses the information to make predictions about what would happen if an earthquake occurred in a particular area. It then uses data from past earthquakes to see whether its predictions are any good, and revises its predictive models accordingly. In other words, it learns as it gocs, which is basically how machine learning works.
Stanford University earthquake engineer Gregory Deierlein consulted for the company. He says one of the most remarkable things about the company's software is its ability to incorporate data from an earthquake as its happening. and to adjust its predictions in real time. "Those sort of things used to be research projects." says Deierlein " After an event, we would collee data and a few years later we' d produce new models." Now the new models appear in a matter of minutes. He note the company's exact methods are opaque. "Like many startup companies they're not fully transparent in everything they're doing." He says.“I mean, that's their proprietary knowledge that they're proprietary knowledge that they're bringing to it."Nonetheless, some first responders are already convinced the software will be useful. Fire chief Dan Ghiorso leads the Woodside Fire Protection District near San Francisco, which covers 32 square miles. The San Andrea's fault is only a couple hundred feet behind the firehouse. Ghiorso says in the past, when an earthquake hit, he 'd have to make educated guesses about what parts of his district might have suffered the most damage, and then drive to each place to make a visual inspection. He hopes the company' s software will change that, although he has yet to put it to the test during an actual quake." Instead of driving thity two square miles, in fifteen minutes on a computer Ican get a good idea of the concerns." he says,“instead of me, taking my educated guess, they re putting science behind it, so I' m very confident." Unfortunately, it's going to take a natural disaster to see if his confidence is justified.
How does Dan Ghlorso view the software?



A. It saves both money and labor.
B. It helps improve the situation
C. It relies too much on past data.
D. It needs more attention

答案:B
解析:
细节题。根据题目人名定位文章最后一段,“when an earthquake hit, he'd have to make educated guesses about what parts of his district might have suffered the most damage, and then drive to each place to make a visual inspection. He hopes the company 's software will change that, although he has yet to put it to the test during an actual quake.",可以判断出B选项正确。

第3题:

Though most people know this story is make-believe, they still tell each other about it(翻译)


参考答案:虽然大多数人都知道这个故事是虚构来的,却依然相互传颂着它。

第4题:

资料:Because of the biochemical reactions in your body that occur with every type of food you eat on a daily bases, some foods age you faster than your real age, while other foods help to fight aging.
Three of the processes that go on inside your body that have a major impact on your rate of aging are called “glycation”, “inflammation” and “oxidation”.
When we talk about aging, we’re not just talking about wrinkles on your skin or how thick your hair is, we’re also talking about factors that you can’t see, such as how well your organs function, and whether your joints are degrading.

The passage is probably___.

A.the preface of a book.
B.an excerpt from a paper on health
C.a book review
D.promotional materials for a book

答案:B
解析:
本题考查的是主旨大意。
【关键词】passage; probably
【主题句】第1自然段Because of the biochemical reactions in your body that occur with every type of food you eat on a daily bases, some foods age you faster than your real age, while other foods help to fight aging. 因为你每天吃的每一种食物而在你体内发生的生物化学反应,有些食物使你比你的实际年龄要老得快,而其他食物则有助于对抗衰老。
【解析】本题的问题是“本文可能选自哪?”。选项A意为“一本书的序言”;选项B意为“关于健康的论文的摘录”;选项C意为“书评”;选项D意为“一本书的宣传材料”。根据主题句可知,本文主要讲的是衰老,可能是从有关健康的文章中节选出来的,故选B。

第5题:

One thing most people these days seem absolutely certain about-and yes,this is a bit ironic-is that absolutist thinking is bad.Making inflexible demands of the world,then losing temper when they're unmet,is no path to happiness.Nor is seeing every issue in black and white,or refusing to be friends with anyone who doesn't share every one of your views.Absolutism is no healthier when turned inwards,either,where it manifests as perfectionism.Yet we all engage in absolutist thinking anyway,because it's easier:we cling to simple rules depression.It's easy to see why absolutism might trigger distress:the more rigid your map of the world,the more opportunities you're creating for that map to collide with the messiness of reality.


答案:
解析:
如今,大多数人似乎绝对肯定的一件事情是:绝对主义思维有害(是的,这有点讽刺)。对生活提出刻板要求,未能满足就大发脾气,这并非幸福之道。认为世间万物非黑即白、非观点毫无二致者不结交,这同样无法带来幸福。绝对主义内化时表现为完美主义,同样于健康不利。然而,我们还是都会陷于绝对主义思维,因为这更容易:我们执迷于简单的法则,以期在原本极其复杂的星球上生存下去。遗憾的是,这一人皆有之的习惯倘若做得过火,反而会阻碍我们身体运转:越来越多的证据表明,绝对主义思维可能引发抑郁症。不难明白绝对主义为何带来痛苦:你对生活的图谱越是死板,你所创造的令其与现实的混乱相冲突的机会也就越多。

第6题:

Surprisingly, the nation's high rate Of unemployment has only affected __________stock
prices in the technology market so far.

A. a little
B. a few
C. most of
D. much of

答案:B
解析:
空格后接复数名词prices,可以和可数名词搭配使用的B和c可能为正确答案。分析句子可知,当其表示“几个的,少数的”句意自然,故选8。

第7题:

A startup company in California is using machine learning and arificial itelligence to advise fire departments about how to plan for earthquakes and respond to them. The company hopes its algorithms can take a lot of the guesswork out of the planning process for disaster response by making accurate predictions about earthquake damage. I's one of a handful of companies rolling out atificial itelligence and machine learning systems that could help predict and respond to foods, cyber-attacks and other large- scale disasters.
Nicole Hu, the company's chief technology oflicer, says the key is to feed the computers three mam categories of data. The first is data about homes and other buildings, such as what materials they're made of, when they were built and how likely they are to collapse when the ground starts shaking. The next category is data about the natural environments. For example. "What is the soil like" What is the elevation like? What is the general humidity like?" explains Hu. The third thing we look at is live instant data." she says, such as the magnitude of the quake, the trafic in the area of the quake and the weather at the time of the quake. The computer uses the information to make predictions about what would happen if an earthquake occurred in a particular area. It then uses data from past earthquakes to see whether its predictions are any good, and revises its predictive models accordingly. In other words, it learns as it gocs, which is basically how machine learning works.
Stanford University earthquake engineer Gregory Deierlein consulted for the company. He says one of the most remarkable things about the company's software is its ability to incorporate data from an earthquake as its happening. and to adjust its predictions in real time. "Those sort of things used to be research projects." says Deierlein " After an event, we would collee data and a few years later we' d produce new models." Now the new models appear in a matter of minutes. He note the company's exact methods are opaque. "Like many startup companies they're not fully transparent in everything they're doing." He says.“I mean, that's their proprietary knowledge that they're proprietary knowledge that they're bringing to it."Nonetheless, some first responders are already convinced the software will be useful. Fire chief Dan Ghiorso leads the Woodside Fire Protection District near San Francisco, which covers 32 square miles. The San Andrea's fault is only a couple hundred feet behind the firehouse. Ghiorso says in the past, when an earthquake hit, he 'd have to make educated guesses about what parts of his district might have suffered the most damage, and then drive to each place to make a visual inspection. He hopes the company' s software will change that, although he has yet to put it to the test during an actual quake." Instead of driving thity two square miles, in fifteen minutes on a computer Ican get a good idea of the concerns." he says,“instead of me, taking my educated guess, they re putting science behind it, so I' m very confident." Unfortunately, it's going to take a natural disaster to see if his confidence is justified.
What is NOT needed for training the earthquake predicting software?


A Data about past earthquakes
B. Data about human impacts
C. Data about the geographic conditions
D. Data about the buildings

答案:B
解析:
是非题。根据题目可定位至文章第二段,可知只有B选项不符合题意。另外三项在文章里都有说到。

第8题:

We stayed up all night, talking about___________had happened in the last few months.

A.what
B.which
C.that
D.why

答案:A
解析:
考查宾语从句。介词about后面是一个宾语从句,从句中缺少主语,所以用what引导。句意为“我们彻夜未眠,谈论着过去几个月里发生的事”。

第9题:

Globalization places us in increasingly more situations where we may need to host international business associates for meals.With so many cultural differences in dining preferences,even among those ofthe same nationality and culture,the safest and most considerate thing we can do when treating a guest is to simply ask.Avoid making too many assumptions about what your guests would like and inquire about their preferences.China's dish names are infused with its culinary culture,and expressing them in English is not always so easy.Zhao Huimin,director of Beijing Foreign Affairs Office,said,"As Beijing is striving to become a'World City',we need a better language environment.And Chinese food has become more popular around the world in recent years,so it's essential to standardize the translation.The newly published book contains easy-to-understand English names of almost all mainstream dishes of China's eight major cuisines.It is for reference only,and is not compulsory."


答案:
解析:
全球化可能使我们需要款待国际商业伙伴的情况日益增加。饮食喜好方面的文化差异很大,即使是在相同国籍和文化背景下,当在招待客人时,我们能够做得最安全、最用到的事情就是直接询问他们。对于你的客人喜欢什么,不要进行太多的假设,而是要去询问他们的喜好。中国莱名注入了中国的烹饪文化,因此用英语表达并不总是那么容易。北京市外事办主任赵惠民说“随着北京在努力地成为‘世界城市’,我们需要更好的语言环境。近年来中国食品在世界范围内变得越来越受欢迎,因此翻译规范化是至关重要的。这本新出版的书(这里指《中文菜单英文译法》)几乎收录中国八大莱系中所有主流菜肴的简单易懂的英文名称。该书仅供参考,并非是强制性的。”

第10题:

资料:Because of the biochemical reactions in your body that occur with every type of food you eat on a daily bases, some foods age you faster than your real age, while other foods help to fight aging.
Three of the processes that go on inside your body that have a major impact on your rate of aging are called “glycation”, “inflammation” and “oxidation”.
When we talk about aging, we’re not just talking about wrinkles on your skin or how thick your hair is, we’re also talking about factors that you can’t see, such as how well your organs function, and whether your joints are degrading.

According to the passage, aging is about all the following except--.

A.the degrading joints
B.the thinning of your hair
C.the good condition of your organs
D.the wrinkles around your eyes

答案:C
解析:
【关键词】aging; except
【主题句】第3自然段When we talk about aging, we’re not just talking about wrinkles on your skin or how thick your hair is, we’re also talking about factors that you can’t see, such as how well your organs function, and whether your joints are degrading. 当我们谈论衰老的时候,我们不仅仅是在谈论你皮肤上的皱纹或者你的头发有多厚,我们还在谈论你看不见的因素,比如你的器官功能如何,以及你的关节是否有退化。
【解析】本题的问题是“根据本文,衰老是关于以下所有内容的,除了哪一项?”。选项A意为“退化的关节”;选项B意为“你的头发薄度”;选项C意为“你的器官状况良好”;选项D意为“你眼睛周围的皱纹”。根据主题句可知,A、B、D选项均与衰老有关,故选C。

更多相关问题