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高中生考康奈尔大学要GPA成绩吗，可以不要吗
Cornell University 每年从中国录取的本科生都是个位数，你必须非常出众才有可能被录取。基本要求大致如下：四年高中成绩，SAT，托福（最低要求100分），各种能展示你能力的活动等等。记住最重要的一条：千万不能通过中介申请，在Cornell University网上有非常明确的声明，一旦发现学生通过中介申请，这个申请就会被直接拒绝。
求助tetrahedron letters投稿须知及格式
Guide for Authors The International Journal for the Rapid Publication of all Preliminary Communications in Organic ChemistryPlease follow these instructions carefully to ensure that the review and publication of your papers are as swift and efficient as possible. These notes may be copied freely. Tetrahedron Letters offers rapid publication of important new developments in organic chemistry. Articles should be in the form of short communications announcing either experimental or theoretical results of special interest. The contents of papers are the sole responsibility of the authors, and publication shall not imply the concurrence of the Editors or Publisher. Manuscript submission Articles: Authors should submit their manuscripts to the appropriate regional editor (see below) via the online submission page of this journal at http://ees.elsevier.com/tetl. Authors will be guided stepwise through the creation and uploading of the various files. The system automatically converts source files to a single Adobe Acrobat PDF version of the article, which is used in the peer review process. Please note that even though manuscript source files are converted to PDF at submission for the review process, these source files are needed for further processing after acceptance. All correspondence, including notification of the editor’s decision and requests for revision, takes place by e-mail and via the author’s home page. A printed copy of the manuscript is not required at any stage of the process.The following items should be submitted to the appropriate regional editor via the online submission page:Manuscript. It is not necessary to embed graphics in the text, but if you do so please note that separate graphic files will always be required for proof production when a manuscript is accepted for publication. Graphics should be submitted as separate, highresolution artwork files. These will be automatically incorporated into the single PDF that the system creates for review. Graphical abstract for the contents list (submitted as a separate document). Cover letter: highlighting the novelty, significance, and urgency of the submitted work, which merits rapid publication and providing details of other relevant information, e.g., submitted or in press manuscripts. List of potential referees (Separate document). Manuscripts should be addressed to the appropriate regional editor: Articles from Austria, Belgium, France, Germany, Portugal, Spain and Switzerland: Professor S. Z. Zard, Laboratoire de Synthèse Organique, École Polytechnique, F-91128 Palaiseau Cedex, France.China: Professor Lin Guo-Qiang, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China (manuscripts from Taiwan may be sent to Professor Lin, or to the usual Editor in Japan, at the choice of the authors).Japan and South Korea: Professor Y. Yamamoto, Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.The Americas:Asymmetric and Combinatorial Synthesis, Heterocycles, Organometallic Chemistry, Physical Organic Chemistry, Radicals, Small Rings, Strained Systems, Theory and Total Synthesis, Professor J. Wood, A. I. Meyers Professor of Chemistry, Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA.General Synthetic and Combinatorial Methods, Bioorganic Chemistry, Heterocycles, Natural Products, Carbohydrates and Photochemistry, Professor B. Ganem, Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301, USA.All regions other than those specified above: Professor E. J. Thomas, Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.NOTE: Papers from India must be addressed to the Associate Editor for India, Professor Chandrasekaran.Templates are provided in order to allow authors to view their paper in a style close to the final printed form. Their use is optional. The templates can be found at http://www.elsevier.com/wps/find/P04_116.cws_home/authors_guide. All manuscripts will be fully typeset from the author’s electronic files. It should be noted that due to defined typesetting standards and the complex requirements of electronic publishing, the Publisher will not always be able to exactly match the layout the author has submitted. In particular, in the finished journal article, figures and tables are usually placed at the top or bottom of pages. The template is only intended to be used in assisting with the preparation and submission of manuscripts.It should be noted that the use of the journal template is not a requirement and its adoption will neither speed nor delay publication. Elsevier can handle most major word processing packages and in general most formatting applied by authors for style and layout is replaced when the article is being typeset.These templates contain a large number of macros. To ensure successful PDF conversion by the online submission system, it is important that the author saves a new document based on the template, rather than saving the template itself. To use the template, the author should save the final document as a Word file with a ".doc" extension (rather than the ".dot" extension). Please use TrueType fonts in order to avoid problems with the creation of the PDF.Please ensure that the graphical abstract is included as page 1 of your manuscript when submitting online. For detailed instructions on the preparation of electronic artwork, consult Elsevier’s Author Gateway at http://www.elsevier.com/wps/find/authors.authors/authorartworkinstructions Language: Articles must be written in clear, concise, grammatical English. Any author who is not fluent in idiomatic English is urged to gain assistance with manuscript preparation. Reviewers are not expected to correct grammatical errors and any deficiency in this area may detract from the scientific content of the paper.Language editing: International Science Editing and Asia Science Editing can provide English language and copyediting services to authors who want to publish in scientific, technical, and medical journals and need assistance before they submit their article or before it is accepted for publication. Authors can contact these services directly: International Science Editing ( http://www.internationalscienceediting.com) and Asia Science Editing ( http://www.asiascienceediting.com) or, for more information about language editing services, authors may contact authorsupport@elsevier.com who will be happy to deal with any questions. Please note Elsevier neither endorses nor takes responsibility for any products, goods, or services offered by outside vendors through our services or in any advertising. For more information please refer to our terms and conditions ( http://authors.elsevier.com/terms_and_conditions.html).Journal policy: Submission of an article implies that the work described has not been published previously (except in the form of an abstract or as part of a published lecture or academic thesis), that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere in the same form, in English or in any other language, without the written consent of the publisher. Authors accept full responsibility for the factual accuracy of the data presented and should obtain any authorization necessary for publication. As such the contents of the papers are the sole responsibility of the authors and publication shall not imply the concurrence of the editors or publisher.All papers are submitted to referees who advise the editor on the matter of acceptance in accordance with the high standards required, on the understanding that the subject matter has not been previously published and is not under consideration elsewhere. Referees will be asked to distinguish contributions meeting the above requirements and having an element of novelty, timeliness, and urgency that merits publication in the journal. We ask referees to help in the selection of articles that have this breadth and suggest that papers covering narrower aspects of the field be sent to journals specializing in those areas. Referee names are not disclosed, but their views are forwarded by the editor to the authors for consideration. Authors are encouraged to suggest names of several experts in the field when papers are first submitted or at any time in the evaluation process.Copyright guidelines: Upon acceptance of an article, authors will be asked to sign a "Journal Publishing Agreement" (for more information on this and copyright see http://authors.elsevier.com). Acceptance of the agreement will ensure the widest possible dissemination of information. An e-mail (or letter) will be sent to the corresponding author confirming receipt of the manuscript together with a "Journal Publishing Agreement" form. If excerpts from other copyrighted works are included, the author(s) must obtain written permission from the copyright owners and credit the source(s) in the article. Elsevier has preprinted forms for use by authors in these cases: contact Elsevier’s Rights Department, Oxford, UK: phone (+44) 1865 843830, fax (+44) 1865 853333, e-mail permissions@elsevier.com. Requests may also be completed online via the Elsevier homepage ( http://www.elsevier.com/locate/permissions).Authors’ rights: As an author you (or your employer or institution) retain certain rights; for details you are referred to: http://www.elsevier.com/wps/find/authorshome.authors/authorsrights. Manuscript preparation General requirements: The corresponding author’s full mailing address, including mail codes, phone number, fax number, and e-mail address should be included. Authors are asked to provide four keywords, which will be used for indexing purposes. The manuscript should be compiled in the following order: Graphical Abstract, Title, Authors, Affiliations, Abstract, Keywords, Introduction, Results, Discussion, Conclusion, Experimental, Acknowledgments, References and Notes, Tables, Legends, Figures, and Schemes. Graphical abstracts: Authors must supply a graphical abstract at the time the paper is first submitted. The abstract should summarise the contents of the paper in a concise, pictorial form designed to capture the attention of a wide readership and for compilation of databases. Carefully drawn chemical structures that serve to illustrate the theme of the paper are desired. Authors may also provide appropriate text, not exceeding 30 words. The content of the graphical abstract will be typeset and should be kept within an area of 5 cm by 17 cm. Authors must supply the graphic separately as an electronic file. For examples of graphical abstracts, please consult a recent issue of the journal or visit the journal home page on ScienceDirect at http://www.sciencedirect.com/science/journal/00404020 and click "Sample Issue Online".Title: The title should be brief, specific, and rich in informative words; it should not contain any literature references or compound numbers.
