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There are usually acknowledgment and reference sections as well as an abstract -LRB- a concise summary -RRB- at the beginning of the paper . There might be additional sections depending on the type of paper and the journal where it will be published ; for example , some review papers require an outline . The introduction starts with brief , but broad , background information about what is known in the field . A good introduction also gives the rationale of the work ; it justifies the work carried out and also briefly mentions the end of the paper , where the hypothesis or research question driving the research will be presented . The introduction refers to the published scientific work of others and therefore requires citations following the style of the journal .
Please check all the words that can be used instead of the target word in the same context. Note that the morphology of the target (third person singular, past tense etc.) is considered to be applied to the candidate automatically in the process of paraphrasing.