首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
Oceanography has been defined as "The application of all sciences to the study of the sea". Before the nineteenth century, s
Oceanography has been defined as "The application of all sciences to the study of the sea". Before the nineteenth century, s
admin
2018-04-17
37
问题
Oceanography has been defined as "The application of all sciences to the study of the sea".
Before the nineteenth century, scientists with an interest in the sea were few and far between. Certainly Newton considered some theoretical aspects of it in his writings, but he was reluctant(不愿意) to go to sea to further his work.
For most people the sea was remote, and with the exception of early intercontinental’ travelers or others who earned a living from the sea, there was little reason to ask many questions about it, let alone to ask what lay beneath the surface. The first time that the question "What is at the bottom of the oceans?" had to be answered with any commercial consequence was when the laying of a telegraph cable from Europe to America was proposed. The engineers had to know the depth profile (起伏形状) of the route to estimate the length of cable that had to be manufactured.
It was to Maury of the US Navy that the Atlantic Telegraph Company turned, in 1853, for information on this matter. In the 1840s, Maury had been responsible for encouraging voyages during which soundings (探测) were taken to investigate the depths of the North Atlantic and Pacific Oceans.
Later, some of his findings aroused much popular interest in his book The Physical Geography of the Sea.
The cable was laid, but not until 1866 was the connection made permanent and reliable. At the early attempts, the cable failed and when it was taken out for repairs it was found to be covered in living growths, a fact which defied contemporary scientific opinion that there was no life in the deeper parts of the sea.
Within a few years oceanography was under way. In 1872 Thomson led a scientific expedition (考察) , which lasted for four years and brought home thousands of samples from the sea. Their classification and analysis occupied scientists for years and led to a five-volume report, the last volume being published in 1895.
The passage is mainly about______.
选项
A、the beginnings of oceanography
B、the laying of the first undersea cable
C、the investigation of ocean depths
D、the early intercontinental communication
答案
A
解析
通读全文可看出,文章中心与主题在首段首句。因此选A。其他三项均是细节,不能用细节作为主旨大意题的答案。
转载请注明原文地址:https://kaotiyun.com/show/K7iC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Thepolice_____askedthatanyonewhosawtheaccidentshouldgetintouchwith_____.
A.MaybeIshouldcallataxi.B.canyouhelpmeC.it’sthesecondleftD.notreallyE.atthetrafficl
Wouldyouslowdownabit,please?Ican’t______you.
Afterscientistsdidsomeresearch______thehealthofworkers,thegovernmenttriedtofindsomewaytomeettheirdemand.
It’sinterestinghowlittlemostofUSknowaboutourancestorsoraboutthehistoryofourfamily.Ifyou【56】tobenobility(贵族
TraincompaniesinTokyoaretakingactiontoreducethenumberofpeoplejumpinginfrontoftrains.Theyarefittingblueligh
Muchofaparent’sjobistoprovidethegiftsofcaring,love,andemotionalsupporttochildren.Butonegiftisoftenbeyond
根据中文提示,将对话中缺少的内容写在线上。这些句子必须符合英语表达习惯。打句号的地方,用陈述句;打问号的地方,用疑问句。提示:在一次Mary举行的生日晚会上,她的女朋友Linda见到了Mary的表弟Steve。她想结识他。Mary给他们做了介绍。
Sometimeago,astoreadvertisedrebuiltvacuumcleanersofanationallyknownbrandattheabsurdly(荒谬地)lowpriceof$12.50
Manyoftheproblemswefacetodayarenotsonewaswethinktheyare.Andsomeofourmodernsolutionsarenotsonew,either.
随机试题
2009年12月,甲托乙购买化肥,给乙化肥款8000元。乙买完化肥后,剩余500元,于是就用其中的100元购买了有奖邮政明信片。后来,乙将买明信片一事告诉甲,甲想快到元旦了,孩子们会用得上,于是就收下了。甲的儿子(15岁)将其中一张送给朋友丙。2010年7
浮头式换热器具有能消除热应力、便于清洗和检修方便的特点。
社会知觉
鞣质具有的理化性质不包括
肢体能抬离床面但不能对抗阻力时的肌力程度是
女,40岁。大面积银汞合金充填,最近食物嵌塞,余牙正常,要求治疗。如果此牙为死髓牙。牙冠缺损3/4。牙根长大.根管治疗完善。牙槽骨高度基本正常。最佳的治疗方案为
呼吸过速是指呼吸频率超过
超过提示付款期限提示付款的,持票人开户银行不予受理,付款人不予付款。但持票人并不丧失对出票人的追索权,出票人仍应对持票人承担支付票款的责任。()
会计机构负责人、会计主管人员也应当持有会计从业资格证书。()
(2011年上海.A类.108)行政公文发文处理是行政机关日常必须做好的基础性工作,也是办公部门处理行政公文不可或缺的工作内容,发文处理的首要任务是对行政公文进行()。
最新回复
(
0
)