18．"Have you ever been out on a boat and felt it lifted up by a wave？Or have you jumped in the water and felt the rush of energy as waves came over you？"asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh．"There is certainly a lot of energy in waves，"he said．Scientists are working to use that energy to make electricity．Most waves are created when
winds blow across the ocean．"The wind starts out by making little ripples （涟漪），but if they keep on blowing，those ripples get bigger and bigger and turn into waves，"Taylor said．"Waves
are one of nature's ways of picking up energy and then sending it off on a journey．"
When waves come toward the shore，people can set up dams to block the water and send it
through a large wheel called a turbine （涡轮机）．The turbine can then power an electrical generator（发电机） to produce electricity．
"The resource is huge，"said Janet Swain of the World Watch Institute．"We will never run out of wave power．"Besides，wave energy does not create the same pollution as other energy sources，such as oil or coal．Oceans cover three-quarters of the Earth's surface-that would make wave power seem ideal for creating energy throughout the world，though there are some weak points yet to overcome．
Swain said that wave power still costs too much money．She also said that its effects on sea animals are still unknown．What is more，wave power could affect fishing and boat traffic．
Traditional sources of energy like oil and gas may someday run out．"Demand for energy to
power our TVs and computers，drive our cars，and heat and cool our homes is rising rapidly throughout the world，"Swain said．In the future when you turn on a light，an ocean wave could be providing the electricity!
8．The writer uses the two questions at the beginning of the passage toB．
A．test the readers'knowledge about waves
B．draw the readers'attention to the topic
C．show Jamie Taylor's importance
D．invite the readers to answer them
9．The underlined phrase"picking up"（paragraph 1）is closest in meaning toC．
A．starting again
B．speeding up
C．gathering
D．improving
10．We can make better use of wave energy if weC．
A．shorten its journey to thousands of homes
B．build more small power stations on the oceans
C．reduce the cost of turning it into electric power
D．quicken the steps of producing electricity
11．It can be inferred that some day we might not worry aboutC．
A．air pollution
B．our boat traffic
C．our power supply
D．our supply of sea fish．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了石油和天然气等传统能源可能有一天会耗尽，我们需要积极开发可再生能源．
解答 8．B．推理判断题．在文章的开头作者用了两个问题，目的是为了引起读者的兴趣，引起读者对者个题目的关注；故选B．
9．C．词义猜测题．pick up在中学里面有很多意义，在这里是"收集"能量意思，这种意思，后面也有提示，sending it off，是递进关系，很容易推断出其意义，故选C．
10．C．事实判断题．由文章中第五段，Swain said that wave power still costs too much money，可得到答案，其它三个选项文中没有提及．故选C．
11．C．推断题．由第四段第一句话，"The resource is huge，"said Janet Swain of the Worldwatch Institute．"We will never run out of wave power．"可以得到答案，never run out of是不会枯竭的能源，是可再生能源；故选C．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
