首页
登录
职称英语
[originaltext] Not long ago, some of you may have read about a team of mount
[originaltext] Not long ago, some of you may have read about a team of mount
游客
2023-12-23
55
管理
问题
Not long ago, some of you may have read about a team of mountain-climbing scientists who helped to recalculate the elevation of the highest mountain in the world: Mr. Everest. Of course, the elevation of Mt. Everest was determined many years ago, using traditional surveying methods. But these scientists wanted to make a more precise measurement using a new method that takes advantage of recent advances in technology. It’s called the Global Positioning System. The Global Positioning System uses 24 satellites that circle the Earth. Each of these satellites is constantly sending out signals. And each signal contains important information that can be used to determine the longitude, latitude, and elevation of any point on the Earth’s surface. Well, in order to use this system to calculate Mt. Everest’s elevation, scientists needed to put a special receiver on its summit to receive signals from the satellites. The problem with this was that, in the past, the receivers were much too heavy for climbers to carry. But now these receivers have been reduced to about the size and weight of a hand-held telephone, so climbers were able to take a receiver to the top of Everest and, from there, to access the satellite system signals that would allow them to determine the precise elevation. And it turns out that the famous peak is actually a few feet higher than was previously thought.
Q. 23. What is the talk mainly about?
Q. 24.Why does the speak mention a hand-held telephone?
Q. 25.According to the talk, what probably contributed most to the success of the new study of Mount Everest?
Q. 26.In the study described, how were satellites’ signals used?
选项
A、Detailed maps from previous studies.
B、Recent advances in technology.
C、Plenty of funding for the study.
D、Experience carrying heavy loads up mountains.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3297933.html
相关试题推荐
[originaltext]下面你将听到的是一段有关中国经济社会发展的讲话。中国的改革开放已经走过了26个年头。26年来,中国发生了翻天覆地的变化。
[originaltext]下面你将听到的是一段有关经济发展的讲话。Iwouldliketocommentontherelations
[originaltext]下面你将听到的是一段有关中国教育改革与发展的讲话。党的十一届三中全会以来,随着党和国家工作重点转移到以经济建设为中心。
[originaltext]下面你将听到的是一位外国友人在中国一所大学的讲话。Iwouldliketothankyou,Mr.Pres
[originaltext]下面你将听到的是一段有关矿产开发的讲话。中国经济高速发展,需要大量的矿产品及相关的能源与原材料加工制品。每年消耗的矿石量
[originaltext]下面你将听到的是一段有关企业管理的讲话。Itstandstoreasonthatforanorganiza
[originaltext]下面你将听到的是一段有关文化方面的讲话。Whatweneedisa"CultureofTolerance"
[originaltext]下面你将听到的是一段有关金融改革的讲话。我国金融改革的不断深化将为外资银行与中资银行的合作带来新的机遇。银监会鼓励外资银
[originaltext]下面你将听到的是一位中国官员在世界经济论坛年会上的一段讲话。主席先生,女士们、先生们:目前,国际形势正处于深刻变化之
[originaltext]下面你将听到的是一段有关美国银行在亚洲拓展金融业务的讲话。Ifyouthoughtmultimediawass
随机试题
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
HowBabiesLearnLanguageDuringthefirstyearofachi
Thehouseneedstoberepaired,______(房子的屋顶被大风摧毁了).theroofofwhichwasdestroy
Youcan’tbuyhappiness.However,itlooks(1)______youcanatleastinherit
Internationalairlineshaverediscoveredthebusinesstravelers,themanor
Sweden,Denmark,Norway,SwitzerlandandFinlandwere______inthetopfivecoun
男性,60岁。咳嗽,反复肺部感染近1年。吸烟史40年。X线胸片:右上叶近肺门有一
某分部工程的4个施工过程(Ⅰ、Ⅱ、Ⅲ、Ⅳ)组成,分为6个施工段。流水节拍均为3天
A.激活剂 B.酶浓度 C.底物浓度 D.不可逆抑制剂 E.pH值能使酶
生产者剩余是()A.买者得到的量减去卖者的生产成本 B.卖者得到的量减去生
最新回复
(
0
)