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
Fighting Against Water For centuries Dutch engineers have been fighting a war against water. Their main enemy is the sea. A
Fighting Against Water For centuries Dutch engineers have been fighting a war against water. Their main enemy is the sea. A
admin
2023-01-28
50
问题
Fighting Against Water
For centuries Dutch engineers have been fighting a war against water. Their main enemy is the sea. A large part of the country is below sea level. In fact, Holland is also called the
"Netherlands"
which means "low land". Very tall and strong walls, called dykes, have built to keep out the sea. But in very rough weather the sea may suddenly burst through a dyke. Great damage can be caused by floods when this happens.
Three large rivers are also part of the problem. These rivers are the Rhine, the Maas and the Scheldt. They flow through Holland into the North Sea. They have cut many passages across the country. At low tides, the rivers flow into the sea as usual. But at high tide, the sea can flow into the rivers! This is because the land is so low.
The battles against the water never end, but they have made Holland a bigger and bigger country. In order to prevent floods, the engineers take, or reclaim land that was under water. The Dutch have been reclaiming land for seven hundred years.
Land is usually reclaimed from a passage between islands. Two dykes are built across the passage, so they block the water between them. Then the engineers dig long canals and pump the water into them. At low tide, the canals empty the water into the sea.
Because the land is so low, water from the sea and rivers can rise up through the ground. For this reason, the pumps continue working even the land has been drained (that is, when the water has been pumped away). The dykes contain gates, and through these the water is pumped out. In many parts of Holland, pumps must be working all the time. If they stopped, there will be very bad floods.
A piece of reclaimed land is called polder, and Holland has thousands of polders. Some are very large, but others are quite small. There are farms on many of the polders. Corn and other crops grow well on the drained land, and it gives good grass for cattle. Many small towns and villages stand on polders. Even Amsterdam’s great airport, Schiphol, was built on reclaimed land. This land used to be under the old Lake Haarlem.
The Holland claims land from the sea in order to________.
选项
A、prevent floods
B、make their country larger
C、make their country more beautiful
D、have more farmland
答案
A
解析
第三段第二句提到:In order to prevent floods, the engineers take, or reclaim land that was under water:为预防水灾,工程师们开辟水下陆地。所以选A。
转载请注明原文地址:https://kaotiyun.com/show/1nLD777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
半殖民地半封建社会,()是带有两面性的阶级。
中国特色社会主义最本质的特征是()
毛泽东概括的中国共产党新的工作作风是()
中国共产党政治建设的首要任务是()
毛泽东第一次提出“新民主主义革命”科学概念的文章是()
A.Heisseniortoeveryoneelseinthecompany.B.Thatman’stemperisnotsobadasyouhavedescribed.C.Suchpeopleaswis
Byeleveno’clockyesterdayI________attheairport.
Ahistoricchangeistakingplaceinhighereducation.Professorsarebeingheldresponsibleasneverbeforeforhowwelltheys
Thekind-heartedcoupletreattheorphanverywellasthoughhe________theirownson.
A.alreadyB.analyzedC.aspectsD.charactersE.contributingF.describingG.establishedH.qualityI.quo
随机试题
试述生长素的主要生理作用。
2005年以来,渔民孙某等18人经当地政府批准在L县沿海滩涂合伙开办、经营了五个贝类养殖场和一个鱼类养殖场。2010年7月上旬,来自Q县的工业污水沿河道和灌渠倾泻而下,进入孙某等人的六个养殖场,致使滩涂贝类、鱼类成批死亡,给养殖户造成巨大损失。经水产专家评
下列腧穴中,能治疗头痛、项强、口眼歪斜、齿痛等头部病患的腧穴是
A.自身抗体B.病毒感染C.细菌感染D.血钙降低E.碘缺乏Graves病的主要特征是
现代医学观点认为,根管治疗成败的关键性环节是
关于分泌管的叙述,错误的是
公民刘某,住所地为A县,公民王某,住所地为B县,公民周某,住所地为C县。刘某以王某侵犯房屋的所有权为由向法院提起诉讼,周某则主张其才是房屋的真正主人。诉讼所涉及的房屋坐落于D县。那么,你认为哪个法院有管辖权?
“质人”、“贾师”、“廛人”
计算下列定积分:
已知函数u=u(x,y)满足方程试确定参数a,b,利用变换u(x,y)=v(x,y)eax+by将原方程变形,使新方程中不含有一阶偏导数项.
最新回复
(
0
)