问题 单项选择题 A1/A2型题

诊断缩窄性心包炎最可靠的X线征象为()

A.心脏搏动减弱

B.心缘正常弧度消失

C.心脏缩小

D.透视下心脏搏动减弱

E.心包钙化

答案

参考答案:E

解析:心包钙化是缩窄性心包炎的重要征象之一。钙化主要累及右心室前左缘和膈面,呈不规则的蛋壳样、片状或弧线形,有时大部分心包钙化而成"盔甲心"。

阅读理解

阅读理解。

     Many people think of guys as being carefree when it comes to their appearance. But in fact,  a lot

of guys spend plenty of time in front of the mirror. They care just as much as girls do about their body

image.

     Body image is a person's opinions and feelings about his or her own body and physical

appearance.    1   You appreciate your body for its capabilities and accept its imperfections.

        2   Here are some ideas.

     Recognize your strengths.  Different body types are good for different things. What does your body

do well? Maybe your speed, strength, or coordination makes you better than others at a certain sport.

That may be basketball, table tennis, mountain biking, dancing, or even running.  Or perhaps you have

nonsports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting.    3  

     Exercise regularly. Exercise can help you look well and feel good about yourself. Good physiques

(体形) don't just happen.    4   A healthy habit can be as simple as exercising 20 minutes to 1 hour three

days a week. Working out can also lift your spirits.

     Respect your body! Practicing good habits-regular showering; taking care of your teeth, hair, and

skin; wearing clean clothes, and so on-can help you build a positive body image.

       5   Your body is just one part of who you are. Your talent for comedy  a quick wit (智慧), and all

the other things make you unique. So try not to let small imperfections take over.

A. Use this as an opportunity to discover what you're good at.

B. Be yourself.

C. Having a positive body image means feeling satisfied with the way you look.

D. Just explore talents that you feel good about.

E. They take hard work, regular workouts, and a healthy diet.

F. The good news is that selfimage and body image can be  changed.

G. So, what can you do to develop a positive body image?

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