首页
登录
职称英语
A very interesting and important development in science is a device called l
A very interesting and important development in science is a device called l
游客
2023-06-20
11
管理
问题
A very interesting and important development in science is a device called laser. A laser is a machine which produces a light beam. The light produced by a laser is a very special kind of light. The light, called laser beam, is powerful and can be made to do many things. The laser was first developed in 1960, about half a century ago.
There are many different uses for lasers and several different types have been developed. Some use gases to produce the light beam. The gases are heated and cooled, and these processes cause the gases to produce energy in the form of light. One special point of lasers is that the light beam can be stored. If the stored light is then suddenly let go, it is extremely powerful. The light from a laser beam can be used either by storing it and letting it go suddenly, or by using it in a continuous stream.
There are three important areas where the control of the laser beam has been put into use by scientists. These areas are industry, communications, and medicine. In each area, the scientists have been able to use the laser to do things that they could not do in another way. The laser has been very helpful.
In industry, the laser beam has been used for measurement and drilling. When something large is being built—for example, a large bridge—it is important to have very accurate measurements. By accurate measurement, lasers are also helpful in laying down pipelines over long distances. As lasers become more common in industry, there will be more and more uses for them. [br] The laser beam can be used______.
选项
A、only in the areas of construction
B、to cure a patient of a disease
C、in a few areas because it’ s not so powerful
D、to do whatever people want to
答案
B
解析
细节题。使用排除法。根据短文第三段内容可知选项A、C、D都不符合文中表述,所以都可排除。而根据These areas…and medicine,可推断选项B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2768496.html
相关试题推荐
[originaltext]W:(9)Ithinkthisisaveryinterestingclass.M:Yeah,metoo.S
[originaltext]M:Whyisitsoimportanttogotocollege?W:(13)Educationiscr
Itishardtopredicthowscienceisgoingtoturnout,andifitisreally
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
IsBreakfastReallytheMostImportantMealoftheDay?A)Along
随机试题
房扑合并冠心病患者禁忌使用()A.胺碘酮 B.奎尼丁 C.普罗帕酮 D
有关TNM分期的描述,下列哪项是不准确的A.T是指原发肿瘤 B.T是指原发肿瘤
A.补中益气汤 B.两地汤合二至丸 C.当归补血汤 D.四君子汤 E.左
急性肾衰少尿或无尿期饮食的处理不正确的是A.热量供应以蛋白质为主 B.热量供应
课外活动的项目、形式、方式、参加人数不受教学计划、课程标准的限制,内容丰富多彩,
期货公司的期货从业人员必须遵守( )。A.《期货从业人员执业行为准则(修订)》
(2016年真题)根据支付结算法律制度的规定,下列各项中,属于银行本票必须记载事
标准施工合同文件组成中的投标函,不同于《建设工程施工合同(示范文本)》规定的投标
某建设工程项目拟订购5台国产设备,订货价格为50万元/台,设备运杂费率为8%,设
延迟完全可以忽略,适用于实时、大批量、连续数据传输的交换方式是()。A.电路交
最新回复
(
0
)