首页
登录
职称英语
A scientific discovery is often made【C1】______ before someone is able to pu
A scientific discovery is often made【C1】______ before someone is able to pu
游客
2023-11-23
53
管理
问题
A scientific discovery is often made【C1】______ before someone is able to put it to use.【C2】______ , scientists discovered how to split atoms decades【C3】______ the invention of the atomic bomb and the use of【C4】______ power to produce electricity. But sometimes discovery and【C5】______ happen at the same time, as occurred more than thirty years ago【C6】______ the discovery of coherent light and the invention of the laser.
The word laser【C7】______ "light amplification by stimulated emission of radiation. To many people, lasers are very mysterious, but a laser is simply a【C8】______ that produces a strong light. The light from the laser is called【C9】______ light because it is light that only moves in one direction.【C10】______ , incoherent light, like the light from the sun or light from a bulb, moves away from its source【C11】______ all directions, so its strength is very spread out. The light from a laser, moving in only one direction and【C12】______ in a narrow beam, is much stronger. Laser light is created by a【C13】______ called stimulated emission. In this process, the atoms of a certain substance, such as a crystal or a gas, are excited 【C14】______ that they produce coherent light. A person working with a laser can aim this coherent light,【C15】______ a laser beam, in any direction.
As soon as the laser was developed, scientists began thinking of practical applications【C16】______ it. One of the earliest uses was to make extremely precise measurements of distance and speed.【C17】______ , the distance to the moon was measured to within a foot, and the speed of light was measured to 【C18】______ a thousandth of a mile per second. As time【C19】______ , many more applications for the laser were【C20】______ . [br] 【C6】
选项
A、with
B、in
C、to
D、from
答案
A
解析
此题考查介词用法。这里应该选A项with。with的这种用法其实也表示一种特殊的“伴随”,常常用于举例。例如:The same is true with/of you.
转载请注明原文地址:https://tihaiku.com/zcyy/3211922.html
相关试题推荐
Before1973,abortionwasillegalinAmericaunlessthewoman’shealthwas
Before1973,abortionwasillegalinAmericaunlessthewoman’shealthwas
Before1973,abortionwasillegalinAmericaunlessthewoman’shealthwas
Before1973,abortionwasillegalinAmericaunlessthewoman’shealthwas
Onecenturyago,intheyearbeforeFreudandJung’sfamousvisithere,Amer
Onecenturyago,intheyearbeforeFreudandJung’sfamousvisithere,Amer
Onecenturyago,intheyearbeforeFreudandJung’sfamousvisithere,Amer
Onecenturyago,intheyearbeforeFreudandJung’sfamousvisithere,Amer
Onecenturyago,intheyearbeforeFreudandJung’sfamousvisithere,Amer
Onecenturyago,intheyearbeforeFreudandJung’sfamousvisithere,Amer
随机试题
Thesealaylikeanunbrokenmirrorallaroundthepine-girt,lonelyshoreso
根据《营业性演出管理条例》规定,演员不得以假唱欺骗观众,演出举办单位不得组织演员
净是戏曲表演行当之一,它是指()A.群众角色 B.花脸 C.喜剧角色 D.
毕Ⅱ式胃大部切除术后,上腹剧烈疼痛,呕吐频繁、量少,不含胆汁。最可能的并发症是A
某班主任每月在班上开展一次“道德模范”评选活动,由全班投票,选出品德优秀的学生,
_________isthemainrhymingpatternin
银行建立的内部审计管理体系应当是独立垂直的,审计预算、人员薪酬、主要负责人任免由
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
期货合约中设置最小变动价位的目的是()。A.保证市场运营的稳定性 B.保证市场
府城房地产开发公司为内资企业,公司于2016年1月-2019年12
最新回复
(
0
)