20．Film cameras and digital cameras work in a similar way．
Film cameras
After all，a film camera is basically a light-proof （不透光的） box．It has a lens （鏡頭） system to focus light onto the film at the back of the camera．
Let's suppose that we are outside on a beautiful summer day trying to take a picture of the family dog．We are using a film camera．We finally get the dog to lie still．You point the camera at him．What happens？Light goes into the camera lens and hits the shutter．In other words，nothing happens yet．Now let's say that the dog looks really cute and you decide to snap a picture．What happens？When you press the button，the shutter open for a very short period of time．A small amount of light passes through and hits the film at the back of the camera．This creates an upside-down and reversed （反向的）image on the film．
    When you finish the roll of the film，you can take it to the photo shop to develop it and you will have a great picture of your dog!
    Cameras come with different lens lengths．Why does it matter？Many small cameras have shorter focal lengths，which means that there is a small distance between the lens and the place where the light focuses at the back of the camera．This gives you a large view of the area you are taking a picture of．Lenses with a long focal length show a smaller area but allow you to focus on distant objects and make them bigger．They are often called telephoto lenses．A good example of a long focus lens is one that is used by sports photographers to get photos of football players as if they were standing right beside them．
Digital cameras
    In digital cameras，the light falls not on film but onto a sensor （傳感器）called a CCD （Charge Coupled Device）．This digitally converts（轉(zhuǎn)變） light and colour into a digital information or pixels （象素）．The CCD is the heart of any digital camera and usually the most expensive part----depending on how good it is．
67．Which of the following statements is TRUE？C
A．Both digital and film cameras focus light onto the film．
B．All cameras have a sensor．
C．Digital cameras and film cameras have something in common．．
D．Small cameras usually have longer focal lengths．
68．In the"Film cameras"part，you fail to take the picture of the dog becauseC．
A．light goes into the camera lens and hits the shutter
B．you haven't aimed the camera at the dog
C．the image of the dog is not created
D．the sensor fails to convert light and colour into a digital information
69．The main reason that sports photographers can get clear and big photos of players is thatD．
A．they use digital cameras                              
B．the lens of their cameras is excellent
C．their focus lenses are short                        
D．their focus lenses are long
70．Generally speaking，a digital camera's price isA．
A．closely related to the quality of the CCD
B．irrelevant to the quality of the CCD
C．closely related to the lens
D．irrelevant to the lens．

分析 本文主要講述了傳統(tǒng)的膠片相機(jī)與數(shù)碼相機(jī)的工作原理是一致的及各自的特點(diǎn)．

解答 CCDA
67．C 根據(jù)文章第一句Film cameras and digital cameras work in a similar way．可知傳統(tǒng)的膠片相機(jī)與數(shù)碼相機(jī)的工作原理是一致的，故答案為C
68．C 根據(jù)We finally get the dog to lie still．You point the camera at him．What happens？Light goes into the camera lens and hits the shutter．In other words，nothing happens yet．可知，沒有拍攝成功的原因是底片沒有形成圖象，故答案為C
69．D 根據(jù)A good example of a long focus lens is one that is used by sports photographers to get photos of football players as if they were standing right beside them．
可知，拍攝清晰是因?yàn)殚L焦距的原因，故答案為D
70．A 根據(jù)The CCD is the heart of any digital camera and usually the most expensive part----depending on how good it is．可知，數(shù)碼相機(jī)的價(jià)格與CCD的價(jià)格有關(guān)，故答案為A

點(diǎn)評(píng) 閱讀理解題測試考生在閱讀基礎(chǔ)上的邏輯推理能力，要求考生根據(jù)文章所述事件的邏輯關(guān)系，對(duì)未說明的趨勢或結(jié)局作出合理的推斷；或根據(jù)作者所闡述的觀點(diǎn)理論，對(duì)文章未涉及的現(xiàn)象、事例給以解釋．考生首先要仔細(xì)閱讀短文，完整了解信息，準(zhǔn)確把握作者觀點(diǎn)．

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科目：高中英語 來源： 題型：閱讀理解

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科目：高中英語 來源： 題型：閱讀理解

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We all talk to ourselves sometimes．We're usually too embarrassed to admit it，though．In fact，we really shouldn't be because more and more experts believe talking to ourselves out loud is a healthy habit．
This"self-talk"helps us motivate ourselves，remember things，solve problems，and calm ourselves down．Be aware，though，that as much as 77%of self-talk tends to be negative．So in order to stay positive，we should only speak words of encouragement to ourselves．We should also be quick to  give ourselves a pat on the back．The next time you finish a project，do well in a test，or finally clean your room，join me in saying"Good job!"
Often，words come out of our mouths without us thinking about the effect they will have．But we should be aware that our words cause certain responses in others．For example，when returning an item to a store，we might use warm，friendly language during the exchange．And the clerk will probably respond in a similar manner．Or unkind and critical language will most likely cause the clerk to be defensive．
Words possess power because of their lasting effect．Many of us regret something we once said．And we remember unkind words said to us!Before speaking，we should always ask ourselves：Is it true？Is it loving？Is it needed？If what we want to say doesn't pass this test，then it's better left unsaid．
Words possess power：both positive and negative．Those around us receive encouragement when we speak positively．We can offer hope，build self-esteem（自尊） and motivate others to do their best．Negative words destroy all those things．Will we use our words to hurt or to heal？The choice is ours．

60．The main idea of the first paragraph is thatA．
A．words have a lasting effect on us
B．inspiring words give us confidence
C．negative words may let us down
D．not sticks and stones but words will hurt us
61．It is unnecessary to feel embarrassed when we talk to ourselves becauseC．
A．a(chǎn)lmost everybody has the habit of talking to themselves
B．talking to ourselves always gives us courage
C．we can benefit from talking to ourselves
D．it does no harm to have"self-talk"when we are alone
62．The underlined part in the third paragraph means that we should also occasionallyC．
A．remind ourselves               B．make ourselves relaxed
C．praise ourselves               D．give ourselves amusement
63．The author would probably hold the view thatD．
A．encouraging words are sure to lead to kind offers
B．negative words may motivate us to make more progress
C．people tend to remember friendly words
D．it is better to think twice before talking to others．

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科目：高中英語 來源： 題型：閱讀理解

9．The Middle East countries and other world powers have been facing major political tensions which have made the stability of the crude oil prices very unpredictable．Each day the prospect（前景）of oil prices has become more and more unclear．
Water fuel has been developed as an alternative source of fuel which has fast become popular around the world．This exciting technology has various advantages．More than 70percent of the Earth is covered with water and this fuel source does not produce any harmful pollutants or dangerous emissions（散發(fā)物）either．They in fact also double the mileage（里程）of the cars that are powered by them．
Water fuel technology has been known to be the best additional form of fuel source for petrol or other fuel sources．However，any claim that this technology can be only an additional source and not a replacement is totally incorrect and misleading．such ideas have been implied by those who look down on this technology，On the contrary，this technology has numerous benefits such as it does not produce any harmful emissions which can affect the climate changes．It further helps to reduce the level of noise produced by the engines．
Various researches reflect that running costs on fuels for automobiles can be easily saved up to 40percent with the help of water cell technology．This technology can easily work on various cars powered by gas．It can also be used for trucks，vans and other vehicles．The tap water can also be easily used directly and you do not need any special water that is specially treated to be used for this purpose．You can easily find a lot of details so that you can adapt your car to use the technology．

64．We can learn from the first paragraph that the price of oilC，
A．has been rising for a long time    B is going down at present
C is unstable for political reasons   D is decided by powerful countries
65．Water fuel technology has many advantages EXCEPT thatD．
A water fuel will not pollute the environment
B it is very simple to get such kind of fuel
C cars powered by the fuel can be used longer
D it has already been popular around the world
66．People holding the opposite idea think thatB．
A the world climate won't be influenced by fuel
B petrol can't be completely replaced by water fuel
C the engines will give out less noise than before
D water fuel can't act as an additional source for gas
67．What is the best title for the text？A
A．Water Fuel-Becoming a Reality Now        B．Water Fuel-Lower Cost
C．Water Fuel-a Long Way to Go              D．Water Fuel-a Safer Choice．

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科目：高中英語 來源： 題型：選擇題

10．--What can I do for you？
--If you __________ see Mr．Smith，give him my regards．（　�。�
A．willB．wouldC．shallD．should

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