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雅思考试对比托福、托业、BEC，含金量怎么样?
什么是雅思、托福、托业、BEC?
托业：TOEIC(Test of English for International Communication)国际交流英语考试，由美国教育考试服务中心设计。
每年大约会有500多万人参加的考试，10000多家国际化的公司或机构承认并使用TOEIC考试成绩，整体的考试内容偏向于商业环境，主要考察申请人在国际商业、贸易环境中使用英语的熟练程度，因此也被称为“商业托福”。
托福：TOEFL(The Test of English as a Foreign Language)检定非英语为母语者的英语能力考试，由ETS举办的英语能力考试。
至今为止，美国和加拿大共有2300多所院校规定，凡是外国学生申请到该校入学学习的，必须提供T0EFL，GRE，GMAT或TSE的某一项或两项标准化考试证明。
近几年，国内的联合国驻华机构和一些外企在选择录用时，也会参考托福成绩。
雅思：IELTS(International English Language Testing System)国际英语测试系统，由剑桥大学考试委员会外语考试部、英国文化协会及IDP教育集团共同管理。
雅思考试是为打算到使用英语的国家学习、工作或定居的人们设置的英语水平考试。分学术类和培训类两种，分别针对申请留学的学生和计划在英语语言国家参加工作或移民的人士。
BEC：(Business English Certificate)商务英语考试，指的是剑桥商务英语资格考试,是剑桥系列考试中专为学习者提供的国际商务英语资格证书考试。
考察申请人在真实工作环境中英语的交流能力，被欧洲乃至全球众多教育机构、企业认可，将其作为入学考试或招聘录用的英语语言水平要求，对于求职者有更大的作用。
雅思、托福、托业、BEC有什么区别?
1.研发机构：
雅思和BEC都是由剑桥大学考试中心研发;
托福和托业都是由美国教育考试服务中心研发。
2.适用人群：
雅思(A类)和托福更加强调学术性，用途也是以学生申请学校为主。而BEC和托业是商务英语，面向的是一些职场工作的人群，为了评价工作中英语应用能力的英语考试。
3.适用范围：
不同的国家、学校、机构对各项成绩的接受程度不太一样，例如美国大部分的大学是承认雅思成绩的，但部分学校不能以此来申请教学金;而英国部分学校已经不承认托福成绩了。
但绝大多数大学都不承认BEC和托业成绩，来体现非英语留学生的英语水平。
4.考试形式：
雅思听力、写作和阅读目前多数是传统的纸笔考试，口语是考官面试。托福是包含口语在内的所有考试项目，均为机考。
而托业和BEC则是普通的英语笔试的形式，但BEC相比托业考试，多了一项口语考试的环节，这个口语的考试比较和雅思口语的考试方式类似。
5.用途：
托业和BEC主要用于求职;托福和雅思主要是申请学校使用，少数求职单位会要求托福、雅思成绩，以一部分外企为主。还有一部分国家定居，也是需要雅思成绩的。
雅思、托福、托业、BEC的含金量
如果你是已经决定好不出国留学，安心就业的这类人，考BEC高级比较合适，初级和中级用处不是很大。
现在春招季，很多同学如果没有明确的目标进哪家目标公司，那就考BEC。
有些英语专业的学生，可能毕业之前专四没有考过，偏偏英语专业，四六级成绩又不能作数。在找工作的时候急需一个能证明自己的英语水平的考试，这时候考BEC是最好的选择。
相比托福、雅思和托业来说，BEC的是以通不通过的方式发放证书的，不会有具体的成绩高低，这就等于BEC的证书只是一块进入企业的敲门砖，不会影响后续的晋升。
但如果目标企业是日韩美，这些国家的企业，考托业会比较合适。因为这些公司和托业成绩结合的比较密切，像是托业成绩应聘时免英语考试，或者笔试时使用托业的考卷，某些韩国企业更是直接与升职挂钩。
如果你是没决定好，出不出国的学生，考雅思会比较适合你。
雅思的成绩在大部分国家都是认可的，不管是以后去外企就业还是继续出国深造，都是十分妥当的选择。
另一方面，因为是笔试的形式，避免了如托福机考带来的客观因素的干扰，像是考试中不能划重点、打字速度影响答题等等。
内容上相比托福，雅思的学术性不会太强，更偏向于校园生活的，有一定的方法可循，比托福会略微简单一些，毕竟托福那些天文、考古等学科单词可不是闹着玩的。
最后，值得关注的是，随着雅思考试越来越受到国内院校和雇主的认可，以检测英文水平、国内入学、求职等，国内用途为考试目的考生人数逐渐增加，2018年比例达到5.3%，名列第二!!，首次超越出国移民及工作的群体占比~
总之一句话：有雅思成绩傍身，真的好处多多!如果你想通过相关英语成绩去寻求更好的工作机会，雅思也许是个不错的选择~
雅思阅读全真练习系列：Rogue theory of smell gets a boost
Rogue theory of smell gets a boost
1.A controversial theory of how we smell, which claims that our fine sense of odour depends on quantum mechanics, has been given the thumbs up by a team of physicists.
2.Calculations by researchers at University College London (UCL) show that the idea that we smell odour molecules by sensing their molecular vibrations makes sense in terms of the physics involved.
3.That's still some way from proving that the theory, proposed in the mid-1990s by biophysicist Luca Turin, is correct. But it should make other scientists take the idea more seriously.
4."This is a big step forward," says Turin, who has now set up his own perfume company Flexitral in Virginia. He says that since he published his theory, "it has been ignored rather than criticized."
5.Most scientists have assumed that our sense of smell depends on receptors in the nose detecting the shape of incoming molecules, which triggers a signal to the brain. This molecular 'lock and key' process is thought to lie behind a wide range of the body's detection systems: it is how some parts of the immune system recognise invaders, for example, and how the tongue recognizes some tastes.
6.But Turin argued that smell doesn't seem to fit this picture very well. Molecules that look almost identical can smell very different — such as alcohols, which smell like spirits, and thiols, which smell like rotten eggs. And molecules with very different structures can smell similar. Most strikingly, some molecules can smell different — to animals, if not necessarily to humans — simply because they contain different isotopes (atoms that are chemically identical but have a different mass).
7.Turin's explanation for these smelly facts invokes the idea that the smell signal in olfactory receptor proteins is triggered not by an odour molecule's shape, but by its vibrations, which can enourage an electron to jump between two parts of the receptor in a quantum-mechanical process called tunnelling. This electron movement could initiate the smell signal being sent to the brain.
8.This would explain why isotopes can smell different: their vibration frequencies are changed if the atoms are heavier. Turin's mechanism, says Marshall Stoneham of the UCL team, is more like swipe-card identification than a key fitting a lock.
9.Vibration-assisted electron tunnelling can undoubtedly occur — it is used in an experimental technique for measuring molecular vibrations. "The question is whether this is possible in the nose," says Stoneham's colleague, Andrew Horsfield.
10.Stoneham says that when he first heard about Turin's idea, while Turin was himself based at UCL, "I didn't believe it". But, he adds, "because it was an interesting idea, I thought I should prove it couldn't work. I did some simple calculations, and only then began to feel Luca could be right." Now Stoneham and his co-workers have done the job more thoroughly, in a paper soon to be published in Physical Review Letters.
11.The UCL team calculated the rates of electron hopping in a nose receptor that has an odorant molecule bound to it. This rate depends on various properties of the biomolecular system that are not known, but the researchers could estimate these parameters based on typical values for molecules of this sort.
12.The key issue is whether the hopping rate with the odorant in place is significantly greater than that without it. The calculations show that it is — which means that odour identification in this way seems theoretically possible.
13.But Horsfield stresses that that's different from a proof of Turin's idea. "So far things look plausible, but we need proper experimental verification. We're beginning to think about what experiments could be performed."
14.Meanwhile, Turin is pressing ahead with his hypothesis. "At Flexitral we have been designing odorants exclusively on the basis of their computed vibrations," he says. "Our success rate at odorant discovery is two orders of magnitude better than the competition." At the very least, he is putting his money where his nose is.
(668 words Nature)
Questions 1-4 Do the following statements agree with the information given in the passage? Please write
TRUE if the statement agrees with the writer
FALSE if the statement does not agree with the writer
NOT GIVEN if there is no information about this in the passage
1.The result of the study at UCL agrees with Turin’s theory.
2.The study at UCL could conclusively prove what Luca Turin has hypothesized.
3.Turin left his post at UCL and started his own business because his theory was ignored.
4.The molecules of alcohols and those of thiols look alike.
Questions 5-9 Complete the sentences below with words from the passage. Use NO MORE THAN THREE WORDS for each answer.
5.The hypothesis that we smell by sensing the molecular vibration was made by ______.
6.Turin’s company is based in ______.
7.Most scientists believed that our nose works in the same way as our ______.
8.Different isotopes can smell different when ______ weigh differently.
9.According to Audrew Horsfield, it is still to be proved that ______ could really occur in human nose.
Question 10-12 Answer the questions below using NO MORE THAN THREE WORDS from the passage for each answer.
10.What’s the name of the researcher who collaborated with Stoneham?
11.What is the next step of the UCL team’s study?
12.What is the theoretical basis in designing odorants in Turin’s company?
