2010年中国各部门、各地区加大了节能减排工作力度，高耗能行业产能过快增长的势头得到遏制，六大高耗能行业增加值增长13.5%。比上半年和前三季度分别回落3.7和1.3个百分点，9～12月份当月同比增速均低于10.0%。其中，黑色金属冶炼及压延加工业、有色金属冶炼及压延加工业、电力热力的生产和供应业、化学原料及化学制品制造业、石油加工炼焦及核燃料加工业增加值分别增长11.6%、13.2%、11.0%、15.5%和9.6%，比前三季度分别回落2.1、2.2、1.8、1.0和4.0个百分点；非金属矿物制品业增加值增长20.3%，与前三季度持平。12月份六大高耗能行业增加值同比增长9.8%。
2010年高耗能行业投资增速明显回落。全年六大高耗能行业完成投资34754亿元，增长14.8%(12月份增长15%)，增速同比回落7个百分点。其中，非金属矿物制品业、化学原料及化学制品制造业、电力热力的生产与供应业投资分别增长28.0%、14.8%和6.6%，分别回落15.5、12.1和16.2个百分点；石油加工炼焦及核燃料加工业、有色金属冶炼及压延加工业投资分别增长12.9%和35.8%，分别提高了12.5和19.0个百分点；黑色金属冶炼及压延加工业投资由上年下降1.3%转为增长6.1%。2010年能源原材料价格涨幅快于工业品出厂价格涨幅。工业品出厂价上涨5.5%，其中12月份同比上涨5.9%，比上月回落0.2个百分点，环比上涨O.7%。原材料、燃料、动力购进价格上涨9.6%，其中12月份同比上涨9.5%。
2009年中国六大高耗能行业中投资增速最快与最慢的行业，其投资增速相差( )。
A．44.8%
B．43.5%
C．38.2%
D．45.7%
参考答案：A
解析： 2009年中国六大高耗能行业中投资增速最快的行业为非金属矿物制品业(增速28.0%+15.5%=43.5%)，最慢的为黑色金属冶炼及压延加工业(增速-1.3%)，则投资增速相差43.5%+1.3%=44.8%。(此题并不严谨，其严谨的表述应为：增速相差44.8个百分点)故选A。
College libraries are designed primarily for research and study. To explain its use, let us choose a research topic and follow the step-by-step procedure of looking up the material for the paper. Suppose your assignment is to write a paper on a novel called “The Sun Also Rises” by American writer Hemingway. The first step is to go to the main catalog. Many small drawers on the large wooden cabinets are lined up in alphabetical(字母的) order. Each of the drawers contains hundreds of alphabetical ordered cards. These cards are printed references to all material available in the library. Title cards are cataloged() by the first word of the book title, leaving out the articles like “a”, “an” and “the”. And then you get the cards for the books you need. On the upper left corner of each card is the call number. This is the numerical code that shows where the book is located in the library. The library has open and closed stacks. If your book is on the open stacks, you can go to the open-stack room, and according to the call number find it out by yourself. There are only about 30,000 books on o pen stacks, while most of the 800,000 books in our library are kept in closed stacks, which are accessible only to teachers and graduate students. For undergraduates like you, borrowing books from the closed stacks have to be done with the help of our librarian. In that case, you must fill out a call slip(纸条) for the book, showing the call number, author and title. You can get call slips on tables near the catalog cabinets. You show your call slip together with your library card to a librarian at the information desk. He or she will help you find the book out in the closed stacks.