Water covers more than 70% of the earth’s surface, but less than 3% of water on earth is fresh water.Experts say that globally we use 70% of our fresh water sources for agriculture and irrigation, and only 10% on domestic uses.
根据第二段Watershortageisanissuethat'sprojectedtogetworse,asclimatechangemakesdryareasevendrier.(随着气候变化使干旱地区更加干燥,缺水问题预计将变得更加严重)推知,科学家设计这种蒸汽收集系统是为了缓解水资源短缺。故选B。(2)推理判断题。根据第三段Butnaturealreadyhas a prettygooddesalinationsystem — thesuni...
71% of the Earth's surface is water. On the Earth, 96.5% of the water is found in seas and oceans. 1.7% in groundwater, 1.7% in glaciers (冰川) and 0.001% in the air as vapor (蒸汽) and clouds. Only 3% of the water is fresh water, and 98.8% of the fresh water is in i...
( )a continuous mass of water on the Earth’s surface, all continents are islands in the strict sense of the word. 问题1选项 A. The form of the oceans B. Since the oceans form C. To form the oceans D. That the oceans form 相关知识点: 试题来源: 解析 [答案]B [解析]语法知识...
百度试题 结果1 题目Water evaporates ___ the surface of the earth. A. from B. in C. on D. at 相关知识点: 试题来源: 解析 A。“evaporate from”表示“从……蒸发”,是固定搭配。反馈 收藏
A. surface B. cover C. land D. ground 相关知识点: 试题来源: 解析 [答案] A [考点] 名词辨析 [解析] 此题暂无解析 [解答] A 考查名词辨析。A表面,B掩盖物,C陆地,D地面。句意:我们都知道,地球___97%的水是咸水。根据句意可知是地球表面。故选A。反馈 收藏 ...
There are many types of lakes, including 'oxbow lakes' that form when the force of flowing water gradually exaggerates a meandering curve until it cuts off from the main river channel. Lake Superior on the US-Canada border is often regarded as the largest freshwater lake by area, covering ...
aBuddhism formally spread into china mainly in the northen Han area during the Han dynasty 佛教正式传播了入瓷主要在北韩地区在汉朝期间[translate] a然而,网上购物也有一些缺点 However, on the net the shopping also has some shortcomings[translate] ...
Earth's surface 70% cover water 相关内容 a有很多爱着你的人 Has very is loving your person[translate] a更为重要的是,每个公民都应该明白问题的严重性,并共同努力,为保护我们的环境。为外,植树有利于改善和美化环境 正在翻译,请等待...[translate] ...
The major results include: (1) The maximum area, the average area, and the seasonal variation of surface water in the Huai River Basin showed a downward trend in the past 29 years, and the year-long surface water areas showed a slight upward trend; (2) the surface water area was ...