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. Some canals, such as the Suez or the Panama,【B1】ships weeks of time by making th
Today, most countries in the world have canals. Some canals, such as the Suez or the Panama,【B1】ships weeks of time by making th
admin
2009-04-23
91
问题
Today, most countries in the world have canals. Some canals, such as the Suez or the Panama,【B1】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.【B2】other canals drain lands where there is too much water, help or【B3】fields where there is not enough water.
The【B4】of a canal depends on the kind of boats going through it. The canal must be wide enough to permit two of the【B5】boats using it to【B6】each other easily. It must be deep enough to leave about two feet of water【B7】the keel of the largest boat using the canal.
Some canals have sloping sides, while others have sides that are nearly【B8】Canals that are cut through rock can have nearly vertical sides.【B9】, canals with earth banks may【B10】if the angle of their sides is too steep. Some canals are lined with brick, stone, or concrete to keep the water【B11】soaking into the mud. This also permits ships to go at【B12】speeds, since they cannot make the banks fall in by【B13】up the water. In small canals with mud banks, ships and barges(大平底船) must【B14】their speed.
When the canal goes【B15】different levels of water, the ships must be【B16】or lowered from one level to the other. This is generally done by【B17】of locks. If a ship wants to go up to higher water, the lower end of the lock opens to let the boat in. Then this gate closes, and the water is let into the lock chamber from the up- per level. This raised the level of the water in the lock【B18】it is the same as the upper level of water. Now the upper gates can be opened to【B19】the ship into the higher water. Some-times a canal contains a series of locks when the【B20】in levels is very great.
选项
A、take
B、save
C、cost
D、waste
答案
B
解析
由句中的“by making their voyage at thousand miles shorter”可以推知,运河使航程缩短了1000英里,那么必然是“节省”了轮船的航行时间,因此选B.save。
转载请注明原文地址:https://kaotiyun.com/show/BIZK777K
0
大学英语六级
相关试题推荐
Thebusinesscycleiscomposedofmanyphasesandoneofthemistheexpansionphase.Thisphaseisatwo-foldone,includingre
Thispartistotestyourabilitytodopracticalwriting.YouarerequiredtowriteanInvitationLetteraccordingtothefollo
DISCLAIMER:Thise-mailisconfidentialandshouldnotbeusedbyanyonewhoisnottheoriginalintendedrecipient(收件人).Ifyou
A、Theyarenotgoingtoseetheperformancetogether.B、Themanwillseetheperformancealone.C、Theyaregoingtoseetheperf
Manycountriesfaceasomewhatmoreseriouseconomicproblemsintheformofanunfavorabletradebalance(贸易逆差)withothernati
Manycountriesfaceasomewhatmoreseriouseconomicproblemsintheformofanunfavorabletradebalance(贸易逆差)withothernati
Oldagehasalwaysbeenthoughtofastheworstagetobe;butitisnot【T1】______fortheoldtobeunhappy.Witholdageshould
A、Shewillbepickedupatthestation.B、Shewillbepickedupatherownhouse.C、Shewilltakeatrainthere.D、Shewilltake
Thecommunication【T1】______ofemployeesandtheimportanceofcommunicationinbusiness【T2】______whyyoushouldworktoimprove
A、Designingvariousquestionnaires.B、Makingsurveysinfactories.C、Makinganalysisonstatistics.D、Writingreportsaboutques
随机试题
A.清实热B.退虚热C.二者均是D.二者均非(2003年第99,100题)地骨皮具有的功效是()(
公务员职位分类实行以工资分类表代替了职位类别的划分的国家是
女,16个月,咳嗽4天,发热、气喘半天。查体:体温38.2℃,咽红,呼吸急促,唇轻度发绀,诊断为急性支气管肺炎,对于诊断有利的体征是
某县人民法院审理了一起故意伤害致死案,判处被告人邱某有期徒刑5年,赔偿被害人医疗费2万元。判决宣告后,被告人未上诉,县人民检察院也未提出抗诉,但被害人认为民事赔偿太少,遂提出上诉。二审法院审理后,作出了如下判决,哪一项符合刑事诉讼法的规定?
如果组合中包括了全部股票,则投资人()。
下列关于二十四节气说法错误的是:
InalabinOxfordUniversity’sexperimentalpsychologydepartment,researcherRoiCohenKa-doshistestingarelativelynewbra
RichesandRomanceFromFrance’sWineHarvestSeptemberisharvesttime.Andwithbunchesofgrapesswinging(摇滚)inthewind
假定你是北京一○八中高三(2)班的班长李芳。在北京大学英语系(EnglishDepartment)任教的澳籍教师(Harold)先生,上月曾去你校听过英语课。现在你代表全班同学给哈罗德先生写一封信,请他参加你们班的英语晚会,并请他在晚会上讲一讲“英语泛读
中国菜/中餐
最新回复
(
0
)