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
69
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] 【C18】
选项
A、exact
B、definite
C、certain
D、decisive
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2875363.html
相关试题推荐
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowin
Insomecountriescertainkindsofinsurancearecompulsory.Inothers,most
Insomecountriescertainkindsofinsurancearecompulsory.Inothers,most
Insomecountriescertainkindsofinsurancearecompulsory.Inothers,most
随机试题
Iam______shorttoreachtheshelf.A、enoughB、veryC、tooD、ratherCtoo...to意为“
Internetisavastnetworkofcomputersthatconnectsmanyoftheworld’sbu
______consciousofmymoralobligationsasacitizen.A、Iwasandalwayswillbe
自动喷水灭火系统的设置场所危险等级划分将国家文物保护单位划分为中危险Ⅱ级。
Thechangeinthatvillagewasmiraculou
创客是指利用开源硬件和互联网将各种创意变为实际产品的人,他们将制造业搬到了自己桌
领导职能的突出特征是()。A.主导性 B.公正性 C.协调性 D.决断
关于法的移植,下列说法中正确的是:()A.法律移植的目的是为了使各国的法律趋同
下列选项中应征消费税的是()。A.涂料 B.高档家用电器 C.电动自行车
属于正常血糖水平的是( )。A.空腹血糖5.5mmol/L,餐后2小时血糖7.
最新回复
(
0
)