首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bones or horns, metal knives and mo
Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bones or horns, metal knives and mo
admin
2020-02-11
34
问题
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 and that was where we were stuck, in terms of surgical instruments, for many years. 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 industry, but which was also, in time, to change greatly the art and science of surgery.
The tool is the laser(激光) and it is being used by more and more surgeons all over the world. As we all know, light is hot: any source of light—from the sun itself down to a simple match burning—will give warmth. But light is usually spread out over a wide area. The light in a laser beam(激光束) , however, is concentrated(集中的). 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 (针尖大小的) beam.
Experiments with these pinpoint beams showed researchers that different energy sources produce beams that have a particular effect on certain living cells. It is now possible for eye surgeons to operate on the back of the human eye without harming the front of the eye, simply by passing a laser beam right through the eyeball. No knives, no stitches (缝针), no unwanted damage—a true surgical wonder. Operations which once made patients tired and in need of a long period of recovery time now leave them feeling calm and comfortable. So much more difficult operations can now be tried.
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 the laser in a way that makes surgery not only safer but also more effective. Altogether, tomorrow may see more and more information coming to light on the diseases which can be treated medically.
The rapid development of laser techniques indicates that______.
选项
A、in the future we can also cure cancers
B、surgery is likely to be improved considerably
C、in the future all the diseases can certainly be cured
D、operations will be performed more complicatedly in the future
答案
B
解析
根据最后一段第一句“The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting.”可知,从激光技术的快速发展可以看出其前景非常令人振奋,又根据后面的叙述可以推断出,外科手术的技术可能会得到极大的提高,或许一些癌症都可以通过激光进行治疗。A、C两项说法过于肯定,D项文中并未提及。故选B。
转载请注明原文地址:https://jikaoti.com/ti/UmaGFFFM
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Morethan100peopledied______theearthquakeinthatarea.
Whenamanisdrivingacarforlongdistancesalongamainroadormotorway,twoofhisproblemsaretokeepthecaratafairl
Theman’slife______ifhehadbeensenttoabetterhospital.
Althoughtheexaminationhehadpassedwasunimportant,hissuccess______himinhislaterstudy.
Accordingtosociologists,thereareseveraldifferentwaysinwhichapersonmaybecomerecognizedastheleaderofasocialgr
Annuallymyfamilyhasaget-togetherinastateparkinthemountainsofNorthCarolina.Atoneoftheget-togethers,theweath
Mostpeopleagreethatthedirect,assertive(过分自信的)Americanpersonalityisavirtue,butitsometimessurprisesforeigners.In
Howmanydifferentkindsofemotionsdoyoufeel?Youmaybesurprisedtofindthatitisveryhardtospecifyallofthem.Not
Forthispart,youarerequiredtowriteacompositiononthetopicMyViewonStudyingAbroad.
So______istheweatherinEnglandthatbylunchtimetherecouldbethunderandlightening.
随机试题
适合拔牙矫治的矫治器是
选用外转胎位术纠正臀先露的最佳时期是
A.氯霉素B.环丙沙星C.磺胺嘧啶D.红霉素E.呋喃妥因治疗伤寒、副伤寒的首选药物是
提供互联网药品信息服务的网站不得发布麻醉药品、精神药品、生化药品、血清、疫苗、血液制品和诊断药品和医疗机构制剂的产品信息。()
企业计算应向投资者分配的现金股利,不会引起留存收益总额的变动。()
某公司是一家生产电子产品的大型国有控股公司。2002年12月,由于产品销售不畅,公司面临亏损。公司董事长责令财会部经理胡某对会计报表做技术处理,实现当年盈利目标,并承诺如果做得好,将推荐他作为公司总会计师人选。胡某知道本年度公司亏损已成定局,如要落实董事长
下列行为属于共同犯罪的是()。
Impatiencecharacterizesyoungintellectualworkers.Theywanttomaketheirmark(31).Soit’simportanttoget(32)tothemin
Amajoraspectofmanyfirms’marketingstrategiesoverthepastdecadehavebeenthedevelopmentofnewproducts.【M1】______Co
A、Theyusuallygivetheirchildrenhighcaloriepost-gamemeals.B、Theyprovidetheirchildrenwithinsufficientnutrition.C、Th
最新回复
(
0
)