3．What will power your house in the future？Nuclear，wind，or solar power？According to scientists at the Massachusetts Institute of Technology （MIT） in the US，it might be leaves-but artificial （人造的） ones．
Natural leaves are able to change sunlight and water into energy．It is known as photosynthesis （光合作用）．Now researchers have found a way to imitate this seemingly simple process．
The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts （催化劑）．Similar to natural leaves，it can split water into hydrogen and oxygen when put into a bucket of water．The hydrogen and oxygen gases are then stored in a fuel cell，which uses those two materials to produce electricity，located either on top of a house or beside the house．
Though the leaf is only about the shape f a poker card，scientists claimed that it is promising to be an inexpensive source of electricity in developing countries．"One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology，"said Nocera at a conference of the American Chemical Society．
The artificial leaf is not a new idea．The first artificial leaf was invented in 1997but was too expensive and unstable for practical use．The new leaf，by contrast，is made of cheap materials，easy to use and highly stable．In laboratory studies，Nocera showed that an artificial leaf prototype （原型） could operate continuously for at least 45hours without a drop in activity．
The wonderful improvements come from Nocera's recent discovery of several powerful，new and inexpensive catalysts．These catalysts make the energy transformation inside the leaf more efficient with water and sunlight．Right now，the new leaf is about 10times more efficient at carrying out photosynthesis than a natural one．Besides，the device can run in whatever water is available；that is，it doesn't need pure water．This is important for some countries that don't have access to pure water．
With the goal to"make each home its own power station"and"give energy to the poor"，scientists believe tha the new technology could be widely used in developing countries，especially in India and rural China．

33．Which of the following orders correctly shows how the artificial leaf is used to produce eletricity？A
a．a(chǎn)rtificial leaves split water into hydrogen and oxygen
b．the hydrogen and oxygen gases are stored in a fuel cell
cthe artificial leaves are put in water
d．the fuel cell uses hydrogen and oxygen to produce electricity
A．c，a，b，d        B．c，b，a，d
C．b，c，a，d          D．c，a，d，b
34．The purpose of the scientists at MIT in developing the new artificial leaf is toB．
A．build up more power stations in the world
B．provide cheaper energy for developing countries
C．offer people in developing countries access to pure water
D．gain a deeper understanding of the photosynthesis process
35．The main idea of this passage isD．
A．a(chǎn)n introduction to the history of artificial leaves
B．a(chǎn) mixture of water power and solar energy
C．giving energy to the poor
D．a(chǎn)n invention copying photosynthesis．

分析 本文主要介紹了一種未來給我們提供能源的人造樹葉，這種樹葉會模仿光合作用把水分解成氫氣和氧氣，然后再發(fā)生反應(yīng)來發(fā)電，可為發(fā)展中國家提供便宜的能源．

解答 33-35 ABD
33．A 細(xì)節(jié)理解題：根據(jù)第三段中"it can split water into hydrogen and oxygen when put into a bucket of water．The hydrogen and oxygen gases are then stored in a fuel cell，which uses those two materials to produce electricity，located either on top of a house or beside the house．"當(dāng)把它投入一桶水中，可以把水分解成氫和氧．然后把氫和氧氣體儲存到放置在房間里或房子的旁邊的燃料電池中，使用這兩個材料來產(chǎn)生電能．由此可知正確順序是A．故選A．
34．B 細(xì)節(jié)理解題：根據(jù)第四段scientists claimed that it is promising to be an inexpensive source of electricity in developing countries可知，科學(xué)家聲稱，它可為發(fā)展中國家提供廉價的電力來源．故選B．
35．D 主旨大意題：閱讀全文可知本文介紹了一項仿造葉子光合作用的發(fā)明-人工葉子的工作原理、工作性能和工作條件，可為發(fā)展中國家提供便宜的能源．故選D．

點評 新聞一般采用"倒金字塔"式結(jié)構(gòu)（即先說結(jié)果，再說重要事實，最后說次要內(nèi)容），但有的通訊敘述方比較靈活多變，有順敘、倒敘、中間或許還會有插敘、補敘等敘述方法，這就要求我們在閱讀時特別關(guān)注．必須在十分有限的時間內(nèi)運用略讀、掃讀、跳讀等技巧快速閱讀，搜尋關(guān)鍵詞、主題句，捕捉時空、順序、情節(jié)、人物、觀點，并且理清文章脈絡(luò)，把握語篇實質(zhì)．

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D．With hands．
27．How do you express your bad feelings to your friends from the material？D
A．To tell your friend what you think about the matter．
B．To tell your friend that it's important that you two should reach an agreement．
C．To tell your friend that you need the support from a friend like him．
D．All the above．

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科目：高中英語 來源： 題型：填空題

13．All through history，people from many different countries and cultures have lived together in Britain．The English language （61）consists （consist） of the grammar and vocabulary （62）these （this） people brought to Britain．That is （63）why English has so many difficult rules that confuse people．
The development of English experienced three periods-Old English，Middle English and Modern English．From the 5th to the 9th centuries，Britain was occupied by different groups from other countries，which led to Old English （64）replacing （replace） Celtic．Old English，a mixture of different languages，differs （65）from today's English．Middle English is the name （66）given （give） to the English used from （67）approximately （approximate） the 12th to the 15th centuries．During this period，F(xiàn)rench，though it didn't replace English，still made many （68）contributions （contribution） to Middle English．This resulted in more words with similar meanings．The words for the meat of these animals which （69）was served （serve） to the Normans，came from Old French．Modern English appeared in the 16th century，which went through many changes during this period．The question of （70）whether English will keep on changing in the future is easy to answer．It is certain that this process will continue．

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