2017职称英语考试全真模拟试题 理工类C级第一套
In the past，these journals were available only in print.With the development of electronic publishing，many medical journals now have Web sites on the Internet，and some journals publish only online.A few medical journals，like the Journal of the American Medical Association，are considered general medical journals because they cover many fields of medicine.Most medical journals are specialty journals that focus on a particular area of medicine.
Medical journals publish many types of articles.Research articles report the results of research studies on a range of topics varying from the basic mechanisms of diseases to clinical trials that compare outcomes of different treatments.Review articles summarize and analyze the information available on a specific topic based on a careful search of the medical literature.
Because the results of individual research studies can be affected by many factors，combining results from different studies on the same topic can be helpful in reaching conclusions about the scientific evidence for preventing，diagnosing or treating a particular disease.Case conferences and case reports may be published in medical journals to educate physicians about particular illnesses and how to treat at them.Editorials in medical journals are short essays that express the views of the authors，often regarding a research or review article published in the same issue.
Editorials provide perspective on how the current article fits with other information on the same topic.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.
1. The main readers of medical journals are
A）the general public.
B1healthprofessionals. ，
C）medical critics.
D、news reporters.
2. Which of the following statements is NOT true？
A） Many medical journals also publish online.
B）A few medical journals are general medical journals.
C）Most medical journals publish only online.
D）Most medical journals are specialty journals.
3. How many major types of articles are mentioned in the passage？
A、Five.
B）Seven.
C）Four.
D）Six.
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.
第2篇
Adaptation of Living Things
Certain animals and plants develop characteristics that help them cope with their environment better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter， in providing protection， and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments.
Each living thing is adapted to its way of life in a general way， but each is adapted especially to its own distinct class. A plant， for example， depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals. It depends upon its green leaves for using the sun's energy to make food from inorganic chemicals. These are general adaptations， common to most plants. In addition， there are special adaptations that only certain kinds of plants have.
Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape， and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near.
Organisms have a great variety of ways of adapting. They may adapt in their structure， function， and genetics； in their development and production of the young； and in other respects. An organism may create its won environment， as do warm-blooded mammals， which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage， but sometimes an organism is so well adapted to a particular environment that， if conditions change， it finds it difficult or impossible to readapt to the new conditions.
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