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閱讀下列短文,回答題目.
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.
h of the following would be appropriate to describe the instruments of surgical opera- tions up until 1960s?
itional.
licated.
rkable.
lutionary.
參考答案：A
參考解析：
答案及解析
A【解析】事實細節題。題乾的意思是“以下哪個單詞能夠確切描述20世紀60年代以前的手術工具?”A選項的意為“傳統的”;B選項意為“複雜的”;C選項意為“非凡的”;D選項意為“革命的”。原文第一段提到幾千年前人們用石頭、牛角等做手術，由此可以推斷出選項A是正確的。
do we find after the development of the laser in the 1960s?
strial revolution brought surgery changed greatly.
cal help became available for industrial workers.
study of art went through a complete revolution.
n being's methods in surgery changed greatly.
參考答案：D
參考解析：D【解析】事實細節題。題乾的意思是“20世紀60年代鐳射取得發展後我們可以發現什麼?”根據原文第一段最後一句可知“鐳射為外科手術帶來革命性的變化”，故選D。
reason why the laser beam is very strong is that_______
A. it is artificially illuminated
is made up of a concentrated beam of light
sends out heat in all directions
heat is increased by the heat of the sun
參考答案：B
參考解析：B【解析】事實細節題。題乾的'意思’是“為什麼鐳射束的能量比較強?”根據原文第二段最後一句可知“能量被集中到一起而變得強大”。故答案為B。
r the use of the laser beam, surgeons can perform operations which
e their patients with negative effects
treat only human eye diseases
little damage to their patients
their patients need a long time to recover
參考答案：C
參考解析：C【解析】事實細節題。題乾的意思是“使用鐳射束做手術時醫生可以。文中第三段提到“曾經一度讓患者疲憊不堪，並且術後恢復時間漫長的手術現在讓患者變得很輕鬆很舒服”，可以排除A和D。由文中最後一句“也許一些癌症也能夠用鐳射來治療”可知B選項不正確。C選項意思為“使患者受到很小的傷害”。所以正確答案為C。
