问题 多选题

2011年全国两会让“新能源”、“低碳经济”、“低碳生活”再次成为人们热议的话题,下列有关气候变化问题的叙述中,正确的是(  )

A.由于碳循环具有全球性,因此控制气候变化应该是全人类的共同责任

B.从新陈代谢的角度分析,全球变暖对光能利用率的提高是有利

C.全球气候变暖的原因是由于水汽(H2O)、二氧化碳(CO2)、氧化亚氮(N2O)、甲烷(CH4)及氯氟烃的过量排放

D.控制气候变化的根本措施是减少化石燃料的燃烧

答案

A、由于碳循环具有全球性,为减缓二氧化碳气体的排放,联合国制定了《京都议定书》.造成全球气候变暖的主要原因是森林面积的减少和大量燃烧矿物燃料燃烧产生大量的二氧化碳.因此控制气候变化应该是全人类的共同责任.故A正确,不符合题意.

B、从新陈代谢的角度分析,全球变暖二氧化碳增多,对光能利用率的提高是有利,因为二氧化碳是光合作用的原料.故B正确,不符合题意.

C、全球气候变暖的原因是温室效应,温室效应加剧主要是由于现代化工业社会燃烧过多煤炭、石油和天然气,这些燃料燃烧后放出大量的二氧化碳气体进入大气造成的,二氧化碳也被称为温室气体.故C说法错误,符合题意.

D、化石燃料指的是煤、石油以及天然气,降低大气中二氧化碳的含量就是减少含碳物质的燃烧,增加二氧化碳的消耗.故D正确,不符合题意.

故选:ABD.

单项选择题
单项选择题

People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between us, they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are () of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions. The main reason we tend to focus on the () rather than the human side of the work is not because it’s more () , but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work. If you find yourself concentrating on the () rather than the (), you’re like the vaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!".

The rest of us are () of their work

A.creators

B.innovators

C.appliers

D.inventors