{"blanks":{"1":["Provide"]"2":["Greenhouse"]"3":["nothing"]"4":["earth's"]"5":["cheaply"]"6":["Solving"]"7":["large"]}"title":"Wearenowlivinginthemodernsociety\uff0eMostoftheenergyweuseforheating\uff0clighting\uff

Question

{"blanks": {"1": ["Provide"] "2": ["Greenhouse"] "3": ["nothing"] "4": ["earth's"] "5": ["cheaply"] "6": ["Solving"] "7": ["large"]} "title": "We are now living in the modern society\uff0eMost of the energy we use for heating\uff0clighting\uff0ctransportation and manufacturing \uff08\u5236\u9020\u4e1a\uff09 comes from fossil \uff08\u5316\u77f3\uff09 fuels\uff0eThese are carbon-based fuels from oil\uff0ccoal and natural gas\uff0eWhen we burn these fuels we release heat which \uff0863\uff09p{{$1$}} the energy\uff0e
There are three main disadvantages to using these fuels\uff0eFirstly\uff0cthey are causing climate problems because of the \uff0864\uff09G{{$2$}} Effect\uff0eWhen we burn fossil fuels they produce carbon dioxide which causes global warming\uff0eSecondly\uff0cwhen we have used up all our coal\uff0coil and natural gas\uff0cwe will have \uff0865\uff09n{{$3$}} left to burn\uff0eThirdly\uff0cthey are not very efficient\uff0eThe internal combustion engine \uff08\u5185\u71c3\u673a\uff09 that we use in most cars\uff0ctrucks and buses\uff0cfor example\uff0cis only about 14% efficient\uff0e
Scientists are working on another fuel-hydrogen\uff0eThere are a couple of advantages to using hydrogen as a fuel\uff0eFirstly\uff0cbecause two-thirds of the \uff0866\uff09e{{$4$}} surface is water and water is made of hydrogen and oxygen\uff0eThere is an almost unlimited supply of hydrogen\uff0eSecondly\uff0cburning hydrogen does not cause global warming\uff0eThirdly\uff0cit is much more efficient than carbon-based fuels\uff0e
Unfortunately there are problems with hydrogen at the present time\uff1athere is the problem of separating \uff08\u5206\u79bb\uff09 it from water \uff0867\uff09c{{$5$}}\uff0cand there is the difficulty of storing it\uff0eIt can be stored under pressure but high pressure tanks are far from safe\uff0eIt can also be stored as a liquid but only at extremely low temperatures\uff0eIt seems likely\uff0ctherefore\uff0cthat there will have to be a completely new technology before hydrogen replaces fossil fuels\uff0e\uff0868\uff09S{{$6$}} these problems is an urgent \uff08\u6025\u8feb\u7684\uff09 matter\uff0eAlthough China\uff0cIndia and Australia have huge amounts of cheap coal\uff0cand there are still \uff0869\uff09l{{$7$}} oil and gas reserves\uff08\u50a8\u85cf\u91cf\uff09 elsewhere\uff0cthe effects on the planet's climate will be bad if they are used\uff0e"}

Answer 1

63．Provide．考察动词辨析及上下文理解．文中提到"burn these fuels we release heat"燃烧化石燃料释放热量．由常识可知，燃烧后的热量其实是一种能量，可以被用来加热或产电，因此这些热量提供了能量．所以填写Provide．     
64：Greenhouse，考察名词辨析及上下文理解．文中提到"they are causing climate problems"过度使用化石燃料会引起气候问题，而最严重的也是我们现在谈论最多的，那就是"global warming"全球气温变暖，也就是温室效应，Geenhouse Effect，所以填写"Greenhouse"．
65：nothing，考察代词辨析及上下文理解．我们知道，化石燃料是不可再生资源，文中给出条件"used up all our coal"，当煤等化石燃料用尽后，可想而知，那时候我们就什么能用的了，nothing不定代词，表示什么都没有，所以填写"nothing"．
66：earth's，考察名词辨析及上下文理解．文中提到"surface is water"表面是水，而且面积达到了三分之二，所以应该是在说地球表面的三分之二都是水．由于后文出现宾语water，所以应该用名词所有格形式表示，所以填写"earth's"．
67：cheaply，考察副词辨析及上下文理解．句意：问题是把氢从水中分离出来很便宜，但是很难储存．cheaply副词，便宜地，根据句意可知填写"cheaply"．
68：Solving，考察动词辨析及上下文理解．文中提到"these problems is an urgent （急迫的） matter"问题是迫切的，前面也提到了氢能源的缺点，但氢能源是一种可再生的资源，所以解决氢能源所面临的问题是迫在眉睫的．Solve动词，解决．在此动名词短语做主语，谓语动词用第三人称单数，所以填写Solving．
69：large，考察形容词辨析及上下文理解．文中提到"huge amounts of cheap coal"在这些国家有很大的煤炭储量，后续文章中用连词and来连接，则说明石油和天然气的储量也很大，所以填写"large"来表示大量的．