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学生王某，16岁，8天前曾于校外路边摊进餐（疑不洁饮食），出现腹痛、腹泻、粘液血便2天，大便次数多10次以下/日，呈糊状，伴里急后重感。到辖区医院就诊检查，生命体征正常，腹部软，左下腹有压痛。化验血常规白细胞16.2*109/L，便常规镜下见白细胞20个、可见脓细胞、红细胞数个，便潜血阳性。

本病为蚊虫叮咬所致，下面哪种虫媒叮咬后可引起本病（）

A.库蚊

B.伊蚊

C.蜱

D.按蚊

E.白蛉

答案

参考答案：D

单项选择题

中枢性瘫痪下列哪项是恰当的（）。

A.肌张力增高，腱反射减弱，病理反射阳性

B.肌张力减弱，腱反射增高，病理反射阴性

C.肌张力增高，腱反射增高，病理反射阳性

D.肌张力减弱，腱反射减弱，病理反射阴性

E.肌张力减弱，腱反射减弱，病理反射阳性
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单项选择题

American Museum of Natural History is one of the largest natural and historic museums in the world and one of the main natural history research and education centres in the United States, set up in 1869 and located in the west of the Central Park, Manhattan District, New York. It (1) 7 hectares in its total area, (2) classical types of buildings. The (3) of ancient creatures and humanity is (4) the first place of all the museums in the world, (5) the representative samples from South America, Africa, Europe, Asia and Australia were collected, besides those from the (6) country, the United States.In the museum, there are five kinds of exhibits, including astronomy, mineralogy, human history, and animals in the (7) times and those in modern times. There are thirty-eight exhibition halls with different (8) from 500 to 1,500 square metres. Besides these, there is a Roosevelt Memorial Hall in (9) of President Roosevelt who supported the (10) of the museum, which is also used to have a special exhibition, showing the new important (11) on natural sciences and (12) affairs and social problems, and special topics connected closely with the life of the citizens. Besides this, it is also used for avocation (13) to have all kinds of scientific activities in the laboratories, centres of natural science and centres for citizens. There are more than 10 (14) research departments mainly(15) for collection of samples, research and work of publication.In the museum, there are (16) and sub-libraries of Aulspond ancient amniote, with about 300 thousand books and magazines (17) natural history, many of(18) are very valuable monographs for the first edition. It has published many expert books and magazines, and a large number of propaganda materials, (19) which are the two magazines, Natural History and Members of Museum that have the biggest (20) of their magazines.

7（）

A.original

B.contemporary

C.opposite

D.ancient
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