首页
登录
职称英语
Today, most countries in the world have canals. Many countries have built ca
Today, most countries in the world have canals. Many countries have built ca
游客
2023-07-28
13
管理
问题
Today, most countries in the world have canals. Many countries have built canals near the coast, and parallel【C1】______the coast. Even in the twentieth century, goods can be moved more cheaply by boat than by any other【C2】______of transport. These waterways make【C3】______possible for boats to travel【C4】______ports along the coast without being【C5】______to the dangers of the open. Some canals, such as the Suez and the Panama, save ships weeks of time by making their【C6】______a thousand miles shorter. Other canals permit boats to reach cities that are not【C7】______on the coast, still other canals【C8】______water from rivers or lakes to help【C9】______fields where there is not enough water, and【C10】______water power for factories and mills.
The size of a canal【C11】______on the kind of boats going through it. The canal must be wide enough to .permit two of the largest boats using it to【C12】______each other easily. It must be deep enough to leave about two feet of water【C13】______the keel (龙骨) of the largest boat using the canal. When the planet Mars was first【C14】______through a telescope, people saw that the round disk of the planet was criss-crossed by a【C15】______of strange blue green lines. These were called "canals"【C16】______they looked the same as canals on earth【C17】______are viewed from an airplane. However, scientists are now【C18】______that the Martian phenomena are really not canals. The photographs【C19】______from spaceships have helped us to【C20】______the troth about the Martian "canals". [br] 【C17】
选项
A、that
B、where
C、when
D、as
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2875362.html
相关试题推荐
[originaltext]Todayschoolchildreninmanycountrieshavehighratesoffa
[originaltext]Todayschoolchildreninmanycountrieshavehighratesoffa
[originaltext]Villagesindevelopingcountriesoftenlackmanythings:book
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______t
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______t
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______t
Inmanycountries,itisnot【B1】______forfamiliesofdifferent【B2】______t
Mostpeoplethinkcancerisadiseaseofrichwesterncountries.Nolongeri
Mostpeoplethinkcancerisadiseaseofrichwesterncountries.Nolongeri
Mostpeoplethinkcancerisadiseaseofrichwesterncountries.Nolongeri
随机试题
The21stcenturyusheredinwhatwassupposedtobepaperlessliving.Theda
Thisconstructiveproposalmay__________________________(良性循环地加强这家公司的声誉).reinf
Theterm"qualityoflife"isdifficulttodefine.It【C1】______averywides
焊接H型钢的翼缘板拼接缝的间距不应小于。A.50mm B.100mm C.1
以下哪项颅内出血最常发生在极低出生体重儿A.硬膜下出血 B.蛛网膜下腔出血
患者,女性,43岁,患胆石症6年,2天前因腹痛、寒战,高热和黄疸发作,门诊用抗生
(多选题) 【不定选】下列日常生活常识,正确的是: A甲烷的主要成分是氢
下列哪些选项属于挪用公款归个人使用,从而构成挪用公款罪?()A.国有公司经
彩色电视接收机将彩色信号恢复成三基色信号,采用()在显示屏上重现原始光图像。A
(2020年(12月)年真题)根据《建设工程工程量清单计价规范》,在承包人原因造
最新回复
(
0
)