男,28岁,有咳嗽、咳痰、咯血、胸痛,在右上肺尖段发现一直径2cm球形阴影,周围有索

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问题:

男,28岁,有咳嗽、咳痰、咯血、胸痛,在右上肺尖段发现一直径2cm球形阴影,周围有索状阴影,边缘清楚,其内有点状钙化,最可能的诊断是()

A.包虫囊肿

B.错构瘤

C.肺癌

D.炎性假瘤

E.结核球

考点:广西住院医师放射科综合复习放射科综合复习题库
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在比利时,无论城市大小,都辟有步行街,行人、车辆各行其道,互不干扰。城市很少有红绿灯,却有人人知晓的交通规则:行人第一,马车第二,自行车第三,汽车最后。人人恭敬让行,一切秩序井然。面对这种文明,我们[ ]

A.只能望而兴叹

B.要根据我国的国情建立行之有效的交通法律法规

C.要虚心学习它的优点和长处

D.要寻找能联结双方的相似点

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关于凝集反应,正确的陈述是()

A.细菌、红细胞等颗粒性抗原与相应抗体结合后形成凝集团块,称为凝集反应

B.敏感度可达lμg/ml

C.包括直接凝集反应和间接凝集反应

D.间接凝集反应是将可溶性抗原包被在红细胞或乳胶颗粒表面与相应的抗体反应出现颗粒凝集的现象

E.玻片凝集试验常用于定量测抗体,试管凝集试验常用于定性测抗原

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一台多用户微机的串行通信接口内含Intel 8251A、MCl 488及MCl 489芯片,主机与汉字终端之间通过直接连接实现通信,则终端所接收到的信号电平为()。

A.TTL

B.RS232C

C.CMOS

D.HMOS

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当脱开锚机的链轮离合器时,锚机的运转特点是:()

A.主轴转动而卷筒和链轮不动

B.主轴不动而卷筒和链轮转动

C.主轴和卷筒转动而链轮不转动

D.主轴和卷筒不转动而链轮在转动

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Passage Two

If there is one thing I’m sure about, it is that in a hundred years from now we will still be reading newspapers. It is not that newspapers are a necessity. Even now some people get most of their news from television or radio. Many buy a paper only on Saturday or Sunday. But for most people reading a newspaper has become a habit passed down from generation to generation.

The nature of what is news may change. What basically makes news is what affects our lives—the big political stories, the coverage of the wars, earthquakes and other disasters, will continue much the same. I think there will be more coverage of scientific research, though. It’s already happening in areas that may directly affect our lives, like genetic engineering. In the future, I think there will be more coverage of scientific explanations of why we feel as we do—as we develop a better understanding of how the brain operates and what our feelings really are.

It’s quite possible that in the next century newspapers will be transmitted electronically from Fleet Street and printed out in our own home. In fact, I’m pretty sure that how it will happen in the future. You will probably be able to choose from a menu, making up your own newspaper by picking out the things you want to read--sports and international news, etc.

I think people have got it wrong when they talk about competition between the different media. They actually feed off each other. Some people once foresaw that television would kill off newspapers, but that hasn’t happened. What is read on the printed page lasts longer than pictures on a screen or sound lost in the air. And as for the Internet, it’s never really pleasant to read something just on a screen.

The phrase“feed off”in the last paragraph means()·

A.depend on

B.compete with

C.fight with

D.kill off

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