首页
登录
职称英语
[originaltext]Not, long ago, some of you may have read about the team of mounta
[originaltext]Not, long ago, some of you may have read about the team of mounta
游客
2023-08-01
33
管理
问题
Not, long ago, some of you may have read about the team of mountain climbing scientists who helped to recalculate the elevation of the highest mountain in the world, Mount Everest. Of course the elevation of Mount Everest was determined many years ago using traditional surveying methods. But these scientists wanted to make a more pre else 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 the satellites is constantly sending out signals, and each signal contains important information that can be used to determine the longitude, latitude and elevation at any point on the earth’s surface. Well in order to use the system to calculate a mount of Everest’s elevation, scientists need to put a special receiver on the 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 the receiver to the top of the 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 us previously thought.
选项
A、The advantages of traditional surveying methods.
B、Using satellites to communicate with mountain climbers.
C、Obtaining new information about a mountain.
D、Controlling satellites from the top of a mountain.
答案
C
解析
What is the talk mainly about?
主旨题。解答此题的关键是把具体复杂的表达(recalculate the elevation of the highest mountain)转换成简单概括的表达(Obtaining new information about a mountain)。
转载请注明原文地址:https://tihaiku.com/zcyy/2887726.html
相关试题推荐
【B1】[br]【B10】[originaltext]Abattlehasbeengoingonoverwhogovernsth
【B1】[br]【B6】[originaltext]Abattlehasbeengoingonoverwhogovernsthe
【B1】[br]【B3】[originaltext]Abattlehasbeengoingonoverwhogovernsthe
【B1】[br]【B2】[originaltext]Abattlehasbeengoingonoverwhogovernsthe
[originaltext]Donatingbloodplasmahasalwaysbeenanoblepursuittohelp
[originaltext]Thisguygoestoabarthat’sonthetenthfloorofahotel.
[originaltext]Thisguygoestoabarthat’sonthetenthfloorofahotel.
[originaltext]AccordingtoaJusticeDepartmentreportreleasedinJuly200
[originaltext]AccordingtoaJusticeDepartmentreportreleasedinJuly200
[originaltext]AccordingtoaJusticeDepartmentreportreleasedinJuly200
随机试题
[originaltext]W:Tony,Ijustmovedintomynewapartment,andIneedtohavet
[originaltext]W:Iwouldlikeeveryonetohandinhistermpaperthislessonto
不属于丹毒临床表现的是()A.多见于下肢 B.畏寒、发热 C.皮肤和淋巴结
管道的安装位置应符合设计要求。公称直径大于或等于100mm的管道其距离顶板、墙面
煤矿同意翼轨道运输大巷和胶带运输大巷长距离掘进时,优先采用的通风方案是( )。
以下直径的钢丝可作焊接卷网的为()。A.Ф2.95mm B.Ф3.5mm
在美术课堂作业辅导中,不适合的做法是( )。A.任由学生作业 B.指出作业问
共用题干 InflationBusinessandgovernmentl
国家基本药物遴选的主要原则是()A.防治必需、安全有效、价格合理、使用方便、中
防护罩是砂轮机最主要的防护装置、下列关于砂轮机及其防护罩的说法中,正确的是(
最新回复
(
0
)