首页
登录
职称英语
Despite the ubiquity of computer technology, most people are unaware that
Despite the ubiquity of computer technology, most people are unaware that
游客
2025-02-21
48
管理
问题
Despite the ubiquity of computer technology, most people are unaware that
Line computers exist in two mutually exclusive, distinct categories: analog and digital.
We are most familiar with digital computers, such as laptops. On the one hand,
digital computers process information using a binary number system that allows
(5) them to calculate numbers in an accurate and exact manner. Analog computers,
on the other hand, do not calculate per se; they measure and respond to a
continuously changing input.
Simple analog computers, called astrolabes, were first developed by the
Greeks to solve problems in astronomy. The devices proved very popular and
(10) soon spread throughout the Roman world. By the 10th century, Muslim scholars
had developed the astrolabe into a sophisticated mechanical device capable of
calculating solutions to problems not only in astronomy, but also in astrology,
navigation, surveying, and timekeeping.
Modern scientific opinion was that the ancient Greeks had been
(15) technologically unable to produce a similarly sophisticated computer, until a
discovery was made just over a century ago. In 1900, divers discovered the wreck
of a merchant ship, possibly dating back to 150 BCE, off the coast of the Greek
island Antikythera. In the wreckage, they found the remains of a complex device
apparently a thousand years ahead of its time.
(20) Made of metal, this device, known as the Antikythera mechanism, is
approximately the size of a shoebox. At the time of its discovery, it was in terrible
shape, having been underwater for so long. Its pieces had merged into a broken
mass and experts could discern only that it had something to do with astronomy.
Thanks to a combination of advanced imaging methods and X-ray computer
(25) tomography, however, scientists have since discovered much more.
Originally, the mechanism had at least 30 bronze gears with as many as 225
hand-cut triangular teeth. It had three main dials, one on the front and two on the
back, respectively marking the astronomical divisions of the Egyptian calendar,
the Metonic cycle, and the Saros cycle. Each dial had subdials for greater
(30) specificity. For example, the front dial contained a smaller dial that could be
adjusted to account for leap years. There were also hands and gearing to account
for the movements of the planets.
While the workings of the device are now fairly well understood, researchers
are still puzzled by the reason it was made. Some postulate that it, like later
(35) astrolabes, was used to create astrological charts, or to set feast days, or even to
adjust the lunar and solar calendars. Others have thought it was a curiosity made
solely for display. The device’s relatively small size and the inclusion of a 3,000
character "user’s manual" suggest that the mechanism was created to be portable
and functional, but scientists are no closer to knowing for sure and can only
(40) wonder at the purpose of its superb design. [br] Which of the following would weaken the author’s argument that the Antikythera mechanism was a thousand years ahead of its time?
选项
A、Items discovered on the Antikythera shipwreck were found to date back to 500 BCE.
B、Similarly complex astrolabes were recently found at a series of archeological sites dating between 100 and 500 CE.
C、Complex machines involving pulleys and ropes were found at archeological sites on the Greek island of Antikythera.
D、At the time of the Antikythera shipwreck, the island of Rhodes was famous for its collection of scientific devices.
E、Ancient Romans were famous for their acquisitions of Greek art and architecture.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3966880.html
相关试题推荐
Despitetheubiquityofcomputertechnology,mostpeopleareunawarethat
Despitetheubiquityofcomputertechnology,mostpeopleareunawarethat
MANNERED:A、advancedB、naturalC、childishD、lucidE、unawareB
Wheneconomy,language,cultureandhistory______,peoplebegintoviewthemas
CROWD:PEOPLE::A、gravel:pebblesB、lake:fishC、calculator:buttonD、authorit
Discussionofpersonalincomeisgenerallyseenas______whenamongpeoplewhoar
Despitethecapriciousimpulsesthatoftenimpelledhimtoactioninhissocial
Despiteclaimsthathisartisticstylecanbetracedto(i)______source,thesty
Byanymeasure,computersareamongthemostinfluentialandpowerfultoolsoft
Themusicstoreattractsan______groupofcustomers;peoplewithvariedinterest
随机试题
Yourdogisassmartasanytwoyearold,accordingtoanewstudy.Dogsbri
•Lookatthestatementsbelowandthe5passagesabouttheEuropeanMonetarySy
健康服务营销中缓解客户“认知分歧”,坚定客户信心的方法有()A.讨好客户 B
β2受体激动剂治疗支气管哮喘时的作用机制不正确的是A、舒张气道平滑肌 B、降低
患者女,50岁。胆道蛔虫病1天,体温39℃,巩膜黄染,B型超声示胆总管结石。为警
具有透邪解郁、疏肝理脾功效的方剂是A.逍遥散 B.四逆散 C.小柴胡汤 D
下列关于俄国二月革命的表述,不正确的是()A.推翻了罗曼诺夫王朝的专制统治 B
在()沟通中,沟通的进程主要受个体的主观感受和想象所引导oA、正式B、口头
关于劳动合同效力的说法,正确的是()。A.用人单位投资人发生变更,原劳动合同继
网络图的中间节点是()的节点。A.既无外向箭线,也无内向箭线 B.只有外向箭线
最新回复
(
0
)