1、高考七选五真题训练1 Secret codes （密码） keep messages privateBanks，companies，and government agencies use secret codes in doing business，especially when information is sent by computerPeople have used secret codes for thousands of years （ 1） Code breaking never lags（落后） far behind code makingThe science of crea
2、ting and reading coded messages is called cryptographyThere are three main types of cryptography （2） For example，the first letters of“My elephant eats too many eels“Spell out the hidden message“Meet me“（3） You might represent each letter with a number，for example，Lets number the letters of the alpha
3、bet，in order，from 1 to 26If we substitute a number for each letter，the message“Meet me“would read“13 5 20 13 5“A code uses symbols to replace words，phrases，or sentencesTo read the message of a real code，you must have a code book （4） For example，“bridge“might stand for“meet“and“out“might stand for“me
4、“The message“bridge out“would actually mean“Meet me“ （5） However ，it is also hard to keep a code book secret for longSo codes must be changed frequentlyAIt is very hard to break a code without the code bookBIn any language，some letters are used more than othersCOnly people who know the keyword can r
5、ead the messageDAs long as there have been codes，people have tried to break themEYou can hide a message by having the first letters of each word spell it outFWith a code book，you might write down words that would stand for other wordsGAnother way to hide a message is to use symbols to stand for spec
6、ific letters of the alphabet2 Is Fresh Air Really Good for You？We all grew up hearing people tell us to “go out and get some fresh air“ （1） According to recent studies，the answer is a big YES，if the air quality in your camping area is good（2） If the air youre breathing is cleanwhich it would be if y
7、oure away from the smog of citiesthen the air is filled with lifegiving，energizing oxygen If you exercise out of doors，your body will learn to breathe more deeply，allowing even more oxygen to get to your muscles（肌肉）and your brainRecently，people have begun studying the connection between the natural
8、world and healing（治愈） （3） In these places patients can go to be near nature during their recovery It turns out that just looking at green，growing things can reduce stress，lower blood pressure，and put people into a better mood（情绪） Greenery is good for us Hospital patients Who see tree branches out th
9、eir window are likely to recover at a faster rate than patients who see buildings or sky instead （4） It gives us a great feeling of peace（5） While the suns rays can age and harm our skin， they also give is beneficial Vitamin D To make sure you get enough Vitamin Dbut still protect your skin put on s
10、unscreen right as you head outside It takes sunscreen about fifteen minutes to start working， and thats plenty of time for your skin to absorb a days worth of Vitamin DA Fresh air cleans our lungsB So what are you waiting for？C Being in nature refreshes usD Another side benefit of getting fresh air
11、is sunlightE But is fresh air really as good for you as your mother always said？F Just as importantly， we tend to associate air with health careG All across the country， recovery centers have begun building Healing Gardens3 Color is fundamental in home designsomething youll always have in every room
12、 A grasp of how to manage color in your spaces is one of the first steps to creating rooms youll love to live in Do you want a room thats full of life？ Professional？ Or are you just looking for a place to relax after a long day？ （1） ， color is the key to making a room feel the way you want it to fee
13、lOver the years， there have been a number of different techniques to help designers approach this important point （2） ，they can get a little complex But good news is that therere really only three kinds of decisions you need to make about color in your home： the small ones， the medium ones， and the
14、large ones（3） Theyre the little spots of color like throw pillows， mirrors and baskets that most of us use to add visual interest to our rooms Less tiring than painting your walls and less expensive than buying a colorful sofa， small color choices bring with them the significant benefit of being eas
15、ily changeableMedium color choices are generally furniture pieces such as sofas， dinner tables or bookshelves （4） They require a bigger commitment than smaller ones， and they have a more powerful effect on the feeling of a spaceThe large color decisions in your rooms concern the walls， ceilings， and
16、 floors Whether youre looking at wallpaper or paint， the time， effort and relative expense put into it are significant （5） AWhile all of them are usefulBWhatever youre looking forCIf youre experimentmg with a colorDSmall color choices are the ones were most familiar withE Its not really a good idea
17、to use too many small color piecesF So it pays to be sure， because you want to get it right the first timeG Color choices in this range are a step up from the small ones in two major ways4根据短文内容，从短文后的选项中选出能填入空白处的最佳选项选项中有两项为多余选项If anyone had told me three years ago that I would be spending most of my
18、 weekends campingI would have laughed heartilyCampers，in my eyes，were people who enjoyed insects bites，illcooked meals，and uncomfortable sleeping bagsThey had nothing in common with me （1） The friends who introduced me to camping thought that it meant to be a pioneer （2） We sleep in a tent，cooked ov
19、er an open fire，and walked a long distance to take the shower and use the bathroomThis brief visit with Mother Nature cost me two days off from work， recovering from a bad case of sunburn and the doctors bill for my sons food poisoningI was，nevertheless ， talked into going on another funfilled holid
20、ay in the wilderness （3） Instead，we had a popup camper with comfortable beds and an air conditioner My natureloving friends had remembered to bring all the necessities of life（4） We have done a lot of it sinceRecently，we bought a twentyeightfoot travel trailer complete with a bathroom and a builtin
21、TV setThere is a separate bedroom，a modern kitchen with a refrigeratorThe trailer even has matching carpet and curtains（5） It must be true that sooner or later，everyone finds his or her way back to natureI recommend that you find your way in styleAThis time there was no tentBThings are going to be i
22、mprovedCThe trip they took me on was a rough oneDI was to learn a lot about camping since then，howeverEI must say that I have certainly come to enjoy campingFAfter the trip，my family became quite interested in campingGThere was no shade as the trees were no more than 3 feet tall5Building Trust in a
23、Relationship AgainTrust is a learned behavior that we gain from past experiences， （1） That is a riskBut you cant be successful when theres a lack of trust in a relationship that results from an action where the wrongdoer takes no responsibility to fix the mistakeUnfortunately， weve all been victims
24、of betrayalWhether weve been suffer from，lied to，misled，or cheated on，there are different levels of losing trustSometimes people simply cant trust anymore， （2） Its understandable，but if youre willing to build trust in a relationship again，we have some steps you can take to get you there（3） having co
25、nfidence in yourself will help you make better choices because you can see what the best outcome would be for your wellbeing（4） If youve been betrayed，you are the victim of your circumstanceBut theres a difference between being a victim and living with a“victim mentality“At some point in all of our
26、lives，well have our trust tested or violatedYou didnt lose“everything“Once trust is lost，what is left？Instead of looking at the situation from this hopeless angle，look at everything you still have and be thankful for all of the good in your life （5） instead，its a healthy way to work through the expe
27、rience to allow room for positive growth and forgivenessALearn to really trust yourselfBIt is putting confidence in someoneCStop regarding yourself as the victimDRemember that you can expect the best in returnETheyve been too badly hurt and they cant bear to let it happen againFThis knowledge carries over in their attitude toward their future relationshipsGSeeing the positive side of things doesnt mean youre ignoring what happened答案1.DEGFA 2.EAGCD 3. BADGF 4. DCAFE 5.BEACG
