____2________3____,many factories pour
____4____ polluted water into rivers.____5____,global warming
____6____ less rain in some places.____7____ if we don’t want to put up with thirst,we must protect and make the most of
____8____ on the earth.
目前地球上可饮用的水越来越少。怎么会这样呢?一方面在日常生活中有些人浪费很多水。另一方面有些工厂把大量的污水排入河流。同时全球气候变暖导致某些地方雨水减少。毫无疑问如果我们不想忍受干渴我们就必须保护和利用好地球上的水资源。答案:1.less and less 2.On one hand 3.On the other hand 4.quantities of 5.Meanwhile 6.results in 7.There is no doubt that 8.water resources课文语法填空阅读下面课文缩写材料在空白处填入适当的内容或括号内单词的正确形式(不多于3个单词)。______1_______the earth is becoming warmer but there is fierce debate over whether it is human activity that has caused this global warming or whether it is just a natural phenomenon.
Many scientists like Dr.Janice Foster believe that people have caused the increase in the earth’s temperature ______2______ burning of fossil fuels like coal,natural gas and oil to produce energy ______3______byproducts are called “greenhouse” gases,the most important one ______4______carbon dioxide.These gases trap heat from the sun and therefore warm the earth,without which the earth ______5______(be)about thirtythree degrees Celsius cooler than it is.But increased amount of carbon dioxide means that ______6______ heat energy is trapped in the atmosphere,______7______(cause)the global temperature to go ______8______.
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