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 （漣漪），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 （渦輪機）．The turbine can then power an electrical generator（發(fā)電機） 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．a(chǎn)ir pollution
B．our boat traffic
C．our power supply
D．our supply of sea fish．
分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了石油和天然氣等傳統(tǒng)能源可能有一天會耗盡，我們需要積極開發(fā)可再生能源．
解答 8．B．推理判斷題．在文章的開頭作者用了兩個問題，目的是為了引起讀者的興趣，引起讀者對者個題目的關(guān)注；故選B．
9．C．詞義猜測題．pick up在中學里面有很多意義，在這里是"收集"能量意思，這種意思，后面也有提示，sending it off，是遞進關(guān)系，很容易推斷出其意義，故選C．
10．C．事實判斷題．由文章中第五段，Swain said that wave power still costs too much money，可得到答案，其它三個選項文中沒有提及．故選C．
11．C．推斷題．由第四段第一句話，"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是不會枯竭的能源，是可再生能源；故選C．
點評 考察學生的細節(jié)理解和推理判斷能力，做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確的選擇．在做推理判斷題不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進行合乎邏輯的推理判斷．
