问题 单项选择题

有关胆石症,哪项是对的()

A.胆色素结石的剖面呈放射性条纹状排列

B.胆囊结石多为胆固醇结石或混合性结石

C.肝内胆管结石,右肝管多于左肝管

D.胆道蛔虫所致的结石多为混合性结石

E.肝外胆管结石占全部胆石的10%,多位于肝总管或胆管上段

答案

参考答案:B

解析:胆石按化学成分可分为:胆固醇结石、胆色素结石和混合性结石,在我国各种胆石症中多为胆固醇结石。胆道蛔虫所致的结石多为胆色素结石。胆色素结石的剖面,呈层状而无核心;混合性结石剖面,中心是放射状而外周呈层状。肝内胆管结石的好发部位是左肝管多于右肝管。肝外胆管结石占全部胆石的20%~30%,多位于胆总管下段。

单项选择题

In the last decade the mass media have grown worldwide to be larger, more influential and more powerful. After it was possible in the Federal Republic of Germany in the 60s to receive one TV program and in the 60s and 70s to receive three TV programs, the number of receivable TV programs has risen for a huge part of the population in western Europe through cable TV to eleven or even more programs in the last years. More TV channels are announced. Additionally there is the huge offer of videos. The distribution of video recorders in the population is increasing. Worldwide we are on the way to communication to a mass media society in which fiction, fantasy, the definition of reality assumes a greater role than reality itself, where people want to be permanently entertained, and where the description of the content gains more emphasis than the content itself.

For centuries news on crime have greatly attracted the population, In the Middle Ages ballad singers moved very successfully from town to town in order to spread their ballads which were to a great part murder stories. Criminal stories are not a new development because they do not report anything really new. They are regularly told according to the pattern of the "familiar sensation" because they have a function of relief for the society, because through them, the "law-abiding citizen" can set himself apart from the criminal, because they prove to him that his behavior is "normal" and because he can be content to feel that he is better than the criminals and that he successfully managed to escape the criminal act. There is a huge demand in the population for crime news because they are entertaining and remove the boredom of everyday life. The mass media willingly fulfill this demand because crime news are cheap and easy to get hold of and because they help sell almost any product. That is why there is a symbiosis, an unholy alliance between mass media and society against which the critical criminologist advances his objections almost in vain.

Which of the following could most probably be discussed before this passage().

A. Mass media.

B. Criminal stories.

C. The invention of TV.

D. TV programs in Germany.

单项选择题