首页
登录
职称英语
[originaltext] Three-fourths of the world is covered with water. But only ab
[originaltext] Three-fourths of the world is covered with water. But only ab
游客
2024-02-20
52
管理
问题
Three-fourths of the world is covered with water. But only about 3% of it is fresh. All the rest is salt water, which fills the oceans and seas. (26) In the history, men have tried to build their homes near the sources of fresh water. Now, fresh water is becoming rare, but more and more is needed because of the increasing number of people. Some industries also use large amounts of fresh water in the production of steel, paper, and so on. Scientists estimate that the need of fresh water will have doubled by the year 2050. If it is the truth, we must find new ways of saving or producing it. Some nations have worked on the problem and are already sharing their information with others. They are trying to keep their rivers from being polluted. Deep wells are also being dug, and rainwater is being collected in huge artificial lakes. In one way or another, they hope to provide enough water to satisfy the needs of their people. (27)One important way to have fresh water is to make it from seawater. In this process, the salty seawater is heated, leaving the salt. When the vapor (蒸汽) cools down, it becomes water again. (28)The great problem in desalting is not whether it works, but how much it costs. Building the plants is costly and so are the equipment and fuel for the process. One solution to the problem of the fresh water may be to construct companies with two purposes, that is, making fresh water and generating electricity.
26. Where did men usually build their houses in history?
27. How can scientists provide more fresh water for people?
28. What is the main problem in desalting water?
选项
A、Along big rivers.
B、Near the sources of rivers.
C、Near the sources of lakes.
D、Near the sources of fresh water.
答案
D
解析
事实细节题。短文中提到,历史上,人们一般把房屋建在能直接饮用的淡水源头附近。
转载请注明原文地址:https://tihaiku.com/zcyy/3467401.html
相关试题推荐
[originaltext]WiltChamberlainisretirednow.Heusedtobeafamousbaske
[originaltext]WiltChamberlainisretirednow.Heusedtobeafamousbaske
[originaltext]Morethanthree-millionpeoplediedofAIDSlastyear.Thee
[originaltext]W:We’dbetterbelookingforsalesondownjacketsandthermos
[originaltext]W:We’dbetterbelookingforsalesondownjacketsandthermos
[originaltext]M:Hey,Jane.What’ssointeresting?W:What?Oh,hi,Tom.I’m
[originaltext]W:Didyourpicturesofthenightviewcomeout?M:ActuallyIra
[originaltext]W:Didyourpicturesofthenightviewcomeout?M:ActuallyIra
[originaltext]W:Didyourpicturesofthenightviewcomeout?M:ActuallyIra
[originaltext]W:Didyourpicturesofthenightviewcomeout?M:ActuallyIra
随机试题
Wemaylookattheworldaroundus,butsomehowwemanagenottoseeituntil
TheSkillsofEssayWritingWritingcanhelpyouto
Hispolitenessglueshisbodytothechairandrefusestolethimraise.raise——r
与人工拼大版相比,计算机拼大版的特点主要有( )等。A.成本较低 B.不需要
智慧城市运用信息技术手段,感测、分析、整合城市运行核心系统的各项关键信息,从而对
房地产经纪行业管理的主要内容为()。A:房地产经纪行业年检与验证管理 B:房地
患者女,30岁。心悸、牙龈出血、头晕、月经量过多,曾服止血药治疗未愈。近几天因呼
【变电站综合自动化和集中监控】93、()遥控选择、遥控返校、遥控执行和遥控
下列可协助诊断急性阑尾炎的体征中,正确的是A.右下腹固定压痛是阑尾炎的主要体征
合规总监应取得证券公司高级管理人员任职资格。()
最新回复
(
0
)