问题 单项选择题

对结膜 * * 状瘤的描述正确的是()

A.由巨细胞病毒引起

B.病理特点是表层为复层鳞状上皮,结缔组织中有毛囊、皮脂腺

C.好发于上睑结膜

D.手术切除后不易复发

E.博莱霉素局部注射可降低复发率

答案

参考答案:E

解析:结膜 * * 状瘤由人 * * 瘤病毒(HPV)6或11亚型引起,病理显示 * * 状瘤有覆盖以增殖上皮的结缔组织,上皮中度角化,偶有不规则生长。常发生于角膜缘、泪阜及睑缘部位,瘤体色鲜红,呈肉样隆起。带蒂结膜 * * 状瘤由多个小叶组成,外观平滑、有很多螺旋状的血管。宽基底部的 * * 状瘤,表面不规则,有时会播散及角膜。活检有助于诊断。 * * 状瘤手术切除后易复发,博莱霉素局部注射可降低复发率。因此该题选项为E。

阅读理解

阅读理解。

     Nowadays people are troubled by the violence that spreads throughout the media. Movies, television and

video games are full of gunplay and bloodshed, and one might reasonably ask what's wrong with a, society

that presents videos of violence as entertainment.

     Viewing large amounts of violent television and video games may well contribute to violent behavior in

certain individuals. The trouble comes when researchers downplay uncertainties in their studies or overstate

the case for causality (因果关系). Skeptics (怀疑论者) were dismayed several years ago when a group of

societies including, the American Medical Association tried to end the debate by issuing a joint statement,"

At this time, well over l,000 studies... point to a causal connection between media violence and aggressive

behaviors (攻击性行为) in some children."

     Freedom-of-speech advocates accused the societies of appealing to politicians, and even disputed the

number of studies (most were review articles and essays, they said). When Jonathan Freedman, a social

psychologist at the University of Toronto, reviewed the literature, he found only 200 0r so studies of television-

watching and aggression. And when he weeded out "the most doubtful measures of aggression", only 28%

supported a connection.

     The critical point here is causality. The alarmists say they have proved that violent media cause aggression.

But the assumptions behind their observations need to be examined. When labeling games as violent or non-

violent, should a hero eating a ghost really be counted as a violent event? And when experimenters record the

time it takes game players to read "aggressive" or "non-aggressive" words from a list, can we be sure what

they are actually measuring? The intention of the new Harvard Center on Media and Child Health to collect and

standardize studies of media violence in order to compare their methodologies, assumptions and conclusions

is an important step in the right direction.

     Another appropriate step would be to tone down the criticism until we know more. Several researchers

write, speak and testify quite a lot on the threat posed by violence in the media. That is, of course, their

privilege. But when doing so, they often come out with statements that the matter has now been settled,

drawing criticism from colleagues. In response, the alarmists accuse critics and news reporters of being

deceived by the entertainment industry. Such clashes help neither science nor society.

1. Why is there so much violence shown in movies, TV and video games?

A. There is a lot of violence in the real world today.

B. Something has gone wrong with today's society.

C. Many people are fond of gunplay and bloodshed.

D. Showing violence is thought to be entertaining.

2. What is the skeptics' view of media violence?

A. Violence on television is a fairly accurate reflection of real- world life.

B. A causal relationship exists between media and real-world violence.

C. Most studies overstate the effect of media violence on the viewers.

D. The influence of media violence on children has been underestimated.

3. The author uses the term "alarmists" to refer to those who _____.

A. use standardized measures in the studies of media violence

B. insist on a direct link between violent media and aggressive behavior

C. initiate the debate over the influence of violence media on reality

D. use appropriate methodology in examining aggressive behavior

4. What does the writer think of the debate concerning the relationship between the media and violence?

A. He more than agrees with the views held by the alarmists.

B. It should come to an end since the matter has now been settled.

C. The past studies in this field have proved to be misleading.

D. More studies should be conducted before conclusions are drawn.

单项选择题