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
外语
Today, most countries in the world have canals. Even in the twentieth century, goods can be moved more cheaply by boat than by a
Today, most countries in the world have canals. Even in the twentieth century, goods can be moved more cheaply by boat than by a
admin
2014-01-09
79
问题
Today, most countries in the world have canals. Even in the twentieth century, goods can be moved more cheaply by boat than by any other means of transport. Some canals, such as the Suez or the Panama, save ships weeks of time by making their voyage a thousand miles shorter. Other canals permit boats to reach cities that are not located on the coast, Still other canals drain lands where there is too much water, help to irrigate fields where there is not enough water, and furnish water power for factories and mills.
The size of a canal depends on the kind of boats going through it. The canal must be wide enough to permit two of the largest boats using it to pass each other easily. It must be deep enough to leave about two feet of water beneath the keel of the largest boat using the canal.
Some canals have sloping sides, while others have sides that are nearly vertical. Canals that are cut through rock can have nearly vertical sides. However, canals with earth banks may crumble if the angle of their sides is too steep.
Some canals are lined with brick, stone, or concrete to keep the water from soaking into the mud. This also permits ships to go at greater speeds, since they cannot make the banks fall in by stirring up the water. In small canals with mud banks, ships and barges must limit their speed.
In places where it does not rain very often, irrigation canals drain water from rivers or lakes and carry it to fields. Sometimes artificial lakes, such as the lake behind the Aswan Dam on the Nile river, provide the irrigation water.
In places where there is too much water, canals can drain the water off the land for use in farming. In Holland, acres and acres of land have been drained in this way. Since much of this drained land is below sea level, the water in the canals has to be pumped up to sea level. Dikes have been built in Holland to keep the sea from covering the land, as it did in the past.
Many countries have built canals near the coast, and parallel to the coast. These waterways make it possible for boats to travel between ports along the coast without being exposed to the dangers of the open sea.
It can be inferred from the passage that the water in the canals near the coast in Holland is
选项
A、above sea level
B、at sea level
C、below sea level
D、at a constantly changing level
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/xecO777K
本试题收录于:
NAETI中级口译笔试题库外语翻译证书(NAETI)分类
0
NAETI中级口译笔试
外语翻译证书(NAETI)
相关试题推荐
WinstonChurchill:HisOtherLifeMyfather,WinstonChurchill,beganhisloveaffairwithpaintinginhis40s,amiddisastro
WinstonChurchill:HisOtherLifeMyfather,WinstonChurchill,beganhisloveaffairwithpaintinginhis40s,amiddisastro
WinstonChurchill:HisOtherLifeMyfather,WinstonChurchill,beganhisloveaffairwithpaintinginhis40s,amiddisastro
Johnisreluctanttotakethefinalsteptosolvethisproblem,becauseheknowsclearlythatitmeanstheirrevocablebreaking
SigmundFreudIfthereisasinglenameinallpsychologythatissynonymouswithpersonalitytheory,itisSigmundFreud.Bo
Manyperiodshappenedinhistorywhenremarkableprogresswasmadewithinarelativelyshortspanoftime.
______assessmentisfrequentlyusedinteachingtoevaluateastudent’sprogressthroughoutacourseofstudy.
Ireadrecentlythatmorethan80billionarticlesofclothingareproducedeachyear,butonlyanegligiblefewarerecycled.
Ifyouthoughtmultimediawassomethingtobeenjoyedintheprivacyofyourhome,thinkagain.Banksareonthefrontierofthe
A、None.B、One.C、Two.D、Three.C
随机试题
女,59岁,腹胀3个月,食欲不振,低热。查体:腹部饱满,移动性浊音阳性。抗结核治疗2周不见好转,应行哪个检查
患儿,4岁。测口温时,不慎将体温计咬破。下列护理措施哪项不正确
妇科恶性肿瘤死亡率居首位的是
以下属于国际工程咨询业流行趋势的是()。
路基横断面常用测量方法有( )等。
下列表述中不正确的是()。
“国九条”关于进一步提高上市公司质量,推进上市公司规范运作的内容主要有()
美国行为主义心理学家华生在《行为主义》一书中写道:“给我一打健康的婴儿,一个由我支配的特殊的环境,让我在这个环境里养育他们,我可担保,任意选择一个,不论他们父母的才干、倾向、爱好如何,他们父母的职业及种族如何,我都可以按照我的意愿把他们训练成任何一种人物—
近年来,“通俗历史热”不断出现于媒体的报道之中。作为一种关涉史学的文化现象,我们有必要从历史学的角度对其进行考察。“通俗历史热”是商品经济和文化教育发展到一定程度后定会出现的一种现象。实际上通俗历史并非“新生事物”,它以讲说形式流传的历史已经相
Theseniorsenatorhasinthepastthreetermsbothexperiencedthesweettasteofsuccessandthebitternessofdefeatinhisl
最新回复
(
0
)