问题 单项选择题

患者,男性,45岁,双下肢棕褐色斑疹,无明显自觉症状。查体发现皮损位于胫前区,皮损周围散在针尖大小的瘀点。最可能的诊断是()

A.单纯性紫癜

B.进行性色素性紫癜性皮病

C.色素性紫癜性苔藓样皮炎

D.淤积性皮炎

E.过敏性紫癜

答案

参考答案:B

解析:进行性色素性紫癜性皮肤病,以成年男性多见,好发于小腿及踝部周围。初起为针头大淡红色瘀点,逐渐密集成片,呈棕红色,中央渐变为棕褐色,其边缘如同辣椒样新瘀点不断出现。皮损数目多少不等,后可自愈。由点状、斑片状红斑、紫癜、色素沉着为主要表现。鉴别诊断:①静脉曲张性淤积性皮炎:有静脉曲张,多发生在一侧下肢,皮疹似湿疹样损害,有时可出现溃疡;②过敏性紫癜:多发生于儿童,皮损以大小不等瘀点和瘀斑为主,常伴有腹痛及关节和肾脏的改变。组织病理无含铁血黄素。

单项选择题

完形填空:下面的短文有l5处空白,请根据短文内容为每处空白确定l个最佳选项。

Obesity(肥胖) Causes Global Warming.

The list of ills attributable to obesity keeps growing: Last week, obese people were accused of causing global warming.

This ______(51)comes from Sheldon Jacobson of the University of Illinois, US, and a doctoral student, Laura McLay. Their study ______(52) how much extra gasoline is needed to haul fat Americans around. The answer, they say, is a billion gallons of gas per year. ______(53)

There has been ______(54) for taxes on junk food in recent years. US economist Martin Schmidt suggests a tax on fast food ______(55)to people’s cars. "We tax cigarettes partly because of their health cost," Schmidt said. "Similarly, leading a lazy life style will end ______(56) costing taxpayers more."

US political scientist Eric Oliver said his first instinct was to laugh at these gas and fast food arguments. But such ______(57) are getting attention.

At the US Obesity Society's annual meeting, one person ______(58) obesity with car accident deaths, and another correlated obesity with suicides. No one asked whether there was really a cause-and-effect relationship. " The funny thing was that everyone took it ______(59)." Oliver said.

In a 1960s study, children were ______(60) drawings of children with disabilities and without them, and a drawing of an obese child. They were asked ______(61) they would want for a friend? The obese child was picked last.Three researchers recently repeated the study ______(62) college students. Once again, ______(63) no one, not even obese people, liked the obese person. " Obesity was stigmatized." the researchers said.

But, researchers say, getting______ (64) is not like quitting smoking. People struggle to stop smoking, and, in the end, many succeed. Obesity is different. Science has shown that they have limited personal control over their weight Genes also______ (65) a part.

62.(单项选择题)     

A.seeing

B.helping

C.using

D.surveying

单项选择题