4. An article dealing with results from different studies on the same topic is called
A)a research article.
B)a review article.
C)a case report.
D)an editorial.
5.Letters to the editor enable readers of a medical journal to express comments on
A)any medical event.
B) articles/published in the same issue.
C)articles/published in that journal
D)medical development.
1. B.分析：细节题。问题问及“医疗杂志的主要读者”，借助题干中的main readers作为答案线索，这样发现答案相关句：Medical journals are publications that report medical information to physicians and other health professionals.(该句间接的回答了问题―向内科医生和其他健康专家提供医疗信息，所以答案是B.)
2. C.分析：细节题。发现被选项在内容上都是涉及到“医疗杂志的出版”，所以借?publish作为答案线索，这样发现答案相关句：many medical journals now have Web sites on the Internet(该句与A内容一致)，and some journals/publish only online.(该句直接与C矛盾)A few medical journals，like the Journal of the American Medical Association，are considered general medical journals because they cover many fields of medicine.(该句与B内容一致)Most medical journals are specialty journals that focus on a particular area of medicine.(该句与D内容一致)
3. A. 分析：细节题。该题涉及到文章类型。注意文章中提及文章类型的句子。这样发现答案相关句：Medical journals/publish many types of articles.Research articles report the results of …Review articles summarize and analyze ...Case conferences and case reports may be/published in medical journals ..Editorials provide perspective on ...Letters to the editor provide a way for readers of ..
4. B.分析：细节题。利用题干中的核心结构different studies on the same topic作为答案线索，这样找到答案相关句：Review articles summarize and analyze the information available on a specific topic based on a careful search of the medical literature.(该句说“综述文章是在对医学文献进行了仔细的查询后找出的有关某一具体主题的信息进行汇总和分析”)Because the results of individual research studies can be affected by many factors，combining results from different studies on the same topic (“对于同一主题的不同研究结果的汇总”在含义上与上句“综述文章”的目的一致，因此判断B是答案。)can be helpful in reaching conclusions about the scientific evidence for preventing，diagnosing or treating a particular disease.
5. C. 分析：借助题干中的核心结构Letters to the editor和express comments on作为答案线索，这样在文章最后部分找到答案相关句：Letters to the editor provide a way for readers of the medical journal to express comments， questions or criticisms about articles/published in that journal.(该句内容直接回答了问题：对杂志上发表的文章进行评论，提出问题或提出批评意见)