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
2024-10-06
1
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/3789233.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
[originaltext]W:It’stoobadIcouldn’tgettotherallyagainstfeeshikesla
密斯的建筑设计追求的是()。A.结构精美 B.典雅 C.抽象象征 D.
根据《公路桥梁技术状况评定标准》JTG/TH21--2011,属于5类桥的情形有
设P是3x3矩阵,其秩为2,考虑方程组 (1)设的两个解C1、C2为实数,证明
在招标准备阶段,其工作内容不包括()。 A、确定招标组织 B、明确招标
下列外国作家、作品、国别对应错误的一项是( )。A、但丁——《神曲》——意大利
慢性支气管炎所致阻塞性肺气肿多为A.小叶中央型 B.全小叶型 C.混合型
下列哪种疾病属于特发性白色病变A.白色海绵痣 B.念珠菌性白斑 C.扁平苔藓
防雷装置包括外部防雷装置和内部防雷装置,外部防雷装置由接闪器和接地装置组成,内部
(2019年真题)关于先张法预应力筋张拉操作的说法,错误的是()。A.锚固横梁
最新回复
(
0
)