the ways of making fresh water from sea water D. hot places and dry places40. Which of the following is NOT true? A. New ways are tried to get fresh water. B. A lot of fresh water can be made quickly by heating. C. The best way is to get the most fresh water with the least...
Scientists know how to make sea water fresh. They know many 1 of taking out the salt.One way is to boil the salt water. 2 the water boils, the 3 rises. When the steam 4 it becomes fresh water. 5 way is to use the 6 of the sun. A tray (盘子) with a special glass side ...
light up science (科学)6b 课件unit 4 making fresh water part 1 make it-精品文档 UNIT4 I’mthirsty.Iwanttodrinkfreshwater.Butwehaveonlysaltywater.制备淡水 Seawaterissalty,Butweneedtodrink.Canwemakefreshwater?I’mthirsty.Iwanttodrinkfreshwater.Butwehaveonlysaltywater.Whatdoyouthink?Part1MakeIt colle...
a rated electric output of only 18 watts, but is of sufficient size to demonstrate the concept of using evaporative cooling to increase the electrical output of a 2 to 1 concentrator photovoltaic device, while at the same time condensing the water vapor to recover fresh water from sea water....
People canproducefresh water from the sea now. A. steal B. make C. collect 试题答案 在线课程 练习册系列答案 优效作业本系列答案 天利38套对接高考小题轻松练系列答案 抢先起跑提优大试卷系列答案 培优课堂随堂练习册系列答案 高效课堂课时精练系列答案 ...
Scientists know how to make sea water fresh.They know many __(1)__ of taking out the salt. One way is to boil the salt water.__(2)_the water boils,the __(3)__ rises.When the steam __(4)_ it becomes fresh water.__(5)__ way is to use the __(6)__ of the sun.A ...
【题目】People can produce fresh water from the seanow. A. stealB. makeC. collect 答案 【解析】【答案】B【解析】考查动词。根据句意”现在人们可以从海水中制造淡水”。A选项为"偷,偷东西”,B选项为"做,制造”,C选项为”收集”。因此应选择B选项。相关推荐 1【题目】People can produce fresh water...
They hold back around 15% of the -world’s fresh water from running to the sea. Global warming is making things worse. Warmer weather takes water away. The glaciers (冰川)are becoming smaller. 5 Global warming has had certain effects on water sources (源头).Droughts. happening around the ...
There are two kinds of water---sea water and fresh water\uff0eSea water is \uff082\uff09{{$2$}} and we can't drink it\uff0eWe drink fresh water\uff0eWater is an interesting thing\uff0eWhen we boil water\uff0cit will \uff083\uff09{{$3$}} steam\uff0eIf we put a piece ...
.The water will fall down into rivers and lakes(6)rain and travel back to the sea.This is called the"water cycle".We use half of the rain water(7)falls over the earth. There are parts of the world where there is (8)fresh water.In the Arab countries,salt wate...