首页
登录
职称英语
As the horizons of science have expanded, two main groups of scientists have
As the horizons of science have expanded, two main groups of scientists have
游客
2023-07-11
75
管理
问题
As the horizons of science have expanded, two main groups of scientists have emerged. One is the pure scientist; the other, the applied scientist.
The pure or theoretical scientist does original research in order to understand the basic laws of nature that govern our world. The applied scientist adapts this knowledge to practical problems. Neither is more important than the other, however, for the two groups are very much related.
Sometimes the applied scientist finds the "problems" for the theoretical scientist to work on. Let’s take a particular problem of the aircraft industry: heat-resistant metals. Many of the metals and alloys(合金) that perform satisfactorily in a car cannot be used in a jet-propelled plane. New alloys must be used, because the jet engine operates at a much higher temperature than an automobile engine. The turbine wheel in a turbo-jet must withstand temperatures as high as 1,600 degrees Fahrenheit, so aircraft designers had to turn to the research metallurgist(冶金学者) for the development of metals and alloys that would do the job in jet-propelled planes.
Dividing scientists into two groups—pure and applied—is only one broad way of classifying them, however, when scientific knowledge was very limited, there was no need for men to specialize. Today, with the great body of scientific knowledge, scientists specialize in many different fields. Within each field, there is even further division. And, with finer and finer divisions, the various sciences have become more and more interrelated until no one branch is entirely independent of the others. Many new specialties—geophysics and biochemistry, for example—have resulted from combining the knowledge of two or more sciences.
选项
A、the horizon is enlarged by scientists
B、scientists can observe further space
C、scientist9 are making efforts to expand the outer space
D、science has developed more fields
答案
D
解析
推断题。horizon原意是“地平线,范围,前景”,结合上下文,本句话的意思应为“随着科学范围的扩展”,也就是说,科学已经拓展了更广泛的领域,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/2826677.html
相关试题推荐
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
Thescientistscalculatethatacupofwholemilkprovides______morethan100
IftwoscientistsatLosAlamosNationalLaboratoryarecorrect,peoplewill
IftwoscientistsatLosAlamosNationalLaboratoryarecorrect,peoplewill
Whatistheattitudeoftheauthortowardsthetwoscientists?[br]Whichofthe
Whatistheattitudeoftheauthortowardsthetwoscientists?[br]Whatdoesth
随机试题
TheCapitalBuildingwasthehighestbuildinginSanPaulo.[br]Thefirelasted
Readthearticlebelowaboutstockexchange.Inmostofthelines34—45thereis
【B1】[br]【B12】A、adoptB、layC、stickD、adaptA词义辨析题。adoptprinciples“采取原则”;stick
[originaltext]Catsneverfailtofascinatehumanbeings.Theycanbefriend
某系统由下图所示的部件构成,每个部件的千小时可靠度都为R,该系统的千小时可靠度为
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.A
属于小儿夜啼脾寒气滞证的症状是A.面红口齿 B.指纹紫暗 C.腹部喜揉喜按
疥疮的皮损特点是A.皮肤呈丘疹样风团,上有针头大的瘀点、丘疹或水疱 B.夜间剧
在交通拥堵严重的城市中心区征收拥堵费是为了提高驾车者的下列哪项成本?()A.平
最新回复
(
0
)