第27题单选修改
阅读下列短文,回答{TSE}题目.
Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bones or horns, metal knives and more recently, rubber and plastic. In the 1960s a new tool was developed, one which was, first of all, to be of great practical use to the armed forces and indus- try, but which was also to revolutionize the art and science of surgery.
The tool is the laser and it is being used by more and more surgeons all over the world. As we all know, light is hot, and any source of light will give warmth. But light is usually spread out over a wide area. The light in a laser beam, however, is concentrated. This means that a light with no more power than that produced by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam.
Experiments with these pinpoint beams showed researchers that different energy sources pro- duce beams that have a particular effect on certain living cells. It is now possible for eye surgeons to operate on the back of human eye without harming the front of the eye, simply by passing a laser beam right through the eye-ball. Operations which once left patients exhausted and in need of long period of recovery time now leave them feeling relaxed and comfortable.
The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting. Perhaps some cancers will be treated with laser in a way that makes surgery not only safer but also more effective.
{TS} Which of the following would be appropriate to describe the instruments of surgical opera- tions up until 1960s?
A.Traditional.
B.Complicated.
C.Remarkable.
D.Revolutionary.
参考答案：A
参考解析： 参考译文
几千年前人们就用身边的石头做外科手术。后来人们开始使用骨头或者角、铁刀，现在在用塑料和橡胶。20世纪60年代，发明了一种新工具，这种新工具首先应用在军事以及工业上，后来也渐渐地用于改善手术技术及外科学上。
这种新工具就是激光，全世界越来越多的人在使用它。我们都知道，任何种类的光都是热的，都会散发热量。但是光都会散发得很广阔。然而激光束的光是集中的。这就意味着由普通电灯泡发出的光所产生的能量由于被集中到一起而变得十分巨大。
对这些精尖光束的实验还表明不同的能源产生的光束能够对活细胞产生不同的效应。现在眼科医生仅仅通过让激光束通过眼球就能在后眼球上做手术而不伤害到前眼球。曾经一度让患者疲惫不堪，并且术后恢复时间漫长的手术现在让患者变得很轻松很舒服。
激光技术在过去十年中的迅速发展清楚显示了激光技术的未来还是很乐观的。也许一些癌症也能够用激光来治疗，使得手术不仅更安全而且更有效。
答案及解析
A【解析】事实细节题。题干的意思是“以下哪个单词能够确切描述20世纪60年代以前的手术工具?”A选项的意为“传统的”;B选项意为“复杂的”;C选项意为“非凡的”;D选项意为“革命的”。原文第一段提到几千年前人们用石头、牛角等做手术，由此可以推断出选项A是正确的。
