首页
登录
职称英语
Today, most countries in the world have canals. Some canals, such as the Sue
Today, most countries in the world have canals. Some canals, such as the Sue
游客
2024-09-24
36
管理
问题
Today, most countries in the world have canals. Some canals, such as the Suez or the Panama,【C1】______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.【C2】______other canals drain lands where there is too much water, help or【C3】______fields where there is not enough water.
The【C4】______of a canal depends on the kind of boats going through it. The canal must be wide enough to permit two of the【C5】______boats using it to【C6】______each other easily. It must be deep enough to leave about two feet of water【C7】______the keel of the largest boat using the canal. Some canals have sloping sides, while others have sides that are nearly【C8】______. Canals that are cut through rock can have nearly vertical sides. 【C9】______, canals with earth banks may【C10】______if the angle of their sides is too steep. Some canals are lined with brick, stone, or concrete to keep the water【C11】______soaking into the mud. This also permits ships to go at【C12】______speeds, since they cannot make the banks fall in by【C13】______up the water. In small canals with mud banks, ships and barges(大平底船)must【C14】______their speed.
When the canal goes【C15】______different levels of water, the ships must be【C16】______or lowered from one level to the other. This is generally done by【C17】______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 upper level. This raised the level of the water in the lock【C18】______it is the same as the upper level of water. Now the upper gates can be opened to【C19】______the ship into the higher water. Sometimes a canal contains a series of locks when the【C20】______in levels is very great. [br] 【C15】
选项
A、across
B、along
C、down
D、through
答案
D
解析
从所填词后的different levels of water可推知,运河流经高低不同的水面,故答案为[D]through。go through意为“经历,通过”。go across是“渡过,越过”的意思,多指从物体表面通过,故排除[A];[B]along和[C]down作介词时均意为“沿着”,与后面的different levels of water不搭配。
转载请注明原文地址:https://tihaiku.com/zcyy/3771541.html
相关试题推荐
Aseriesofborderincidentswould______leadthetwocountriestowar.A、inevitab
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
随机试题
Weallfeelsorryfor________forsolongafteryourarrival.A、keepyouwaiting
StudyActivitiesinUniversityInordertohelpcollege
What’stherightactivityforme?Whoeveryouare,there’s
根据《公司法》的规定,股份有限公司下列事项中,必须经出席股东大会的股东所持表决权
在站位或半坐位时腹膜腔最低的位置是()。A.直肠子宫陷凹 B.直肠膀胱陷凹
利用优惠政策筹划法主要包括( )。 I直接利用筹划法 II地点流动筹划法
A注意左边图形相邻的两面展开后依然相邻。
在下列各类软膏剂的基质中,溶解后形成水凝胶的是A.水包油型乳剂基质 B.油脂类
某管道系统钢结构吊架承受静力荷载,其斜杆与柱的连接节点如图所示,钢材采用Q235
案例二 一般资料:?求助者,女性,28,无业。 案例介绍:?求助者由于孩
最新回复
(
0
)