8．Have you ever heard that we humans use only ten percent of our brains?This opinion holds a certain——青夏教育精英家教网—

8．Have you ever heard that we humans use only ten percent of our brains？This opinion holds a certain appeal because if it were true，then we could instantly become ten times more intelligent just by firing up that sleepy majority of the brain!
The idea that we use only a small part of the brain dates back to animal experiments in the 19th century．When scientists stimulated （刺激） a specific part of the brain，the animal moved its leg or tail．If a tiny part of the brain could do something so great，what was the use of the rest of the brain？Some scientists assumed that large parts of the brain were simply useless．
Then，in the early 20th century，scientists observed that stimulating certain parts of the brain had no physical effects．They named these seemingly useless parts of the brain the"silent cortex．"Today we know that in humans，much of the"silent cortex"is actually devoted to complex activities like language，learning，and imagining．
Brain scans have shown that different parts of the brain become much more active as we shift （切换） our attention and focus，but even as we sleep，many areas of the brain are extremely active．Would you be smarter if your entire brain constantly worked to maximum capacity （能力）？Interestingly enough，the opposite is probably true．The less brain activity you need to perform a given task，the more the brain as a whole is able to do．

28．Why does the opinion mentioned in paragraph l seem appealing？A
A．People wish to become much smarter．
B．People believe it is scientific．
C．People know nothing about the brain．
D．People want to make little use of their brain．
29．What did scientists discover in their experiment in the 20th centuryC？
A．The majority of the brain is sleeping．
B．Animals'legs and tails have some connection with their brain．
C．Stimulation on some parts of the brain causes no physical reaction．
D．Certain parts of the brain are devoted to language and learning activities．
30．"Silent cortex"has proved to beB．
A．sensitive to stimulation
B．useful in complex activities
C．responsible for physical reaction
D．more active than the other parts of the brain
31．If you need less brain activity to perform a task，D．
A．you will feel sleepy
B．you must shift your focus
C．you can use your brain to the fullest
D．you will be more productive．

7．Dar and I loved to dance．It was probably the first thing we did together，long before we would share our lives．
We grew up in a small Oregon mountain community where dances were held almost every Saturday night．Dar was seventeen and l was thirteen when we first danced．He was one of the best dancers on the floor，and so was I．We always jitterbugged．No slow dancing for us； nothing remotely romantic．
Our fathers would stand along the wall and watch．Every once in a while，Dar's dad would smile a little and say，to no one in particular，but my dad could hear，"Boy，my kid can sure dance．"My dad never blinked an eye； he acted like he'd never heard．But a while later he would say，to no one in particular，"That girl of mine can sure dance．"
Our dancing together stopped for five years while Dar was in the South Pacific in World War II．When we met again，Dar was twenty-two，and l was eighteen．We began to date and dance again．We were as good together as we remembered，and this time we added slow dancing．
For us，life is a dance，a movement of rhythms，directions，stumbles，missteps，at times slow and precise，or fast and wild and joyous．We did all the steps．
Two nights before Dar died，the family were with us．We all ate dinner together，and Dar sat with us．He hadn't been able to eat for several days．After dinner，I put on a Nat King Cole tape．Dar took me in his arms，weak as he was，and we danced and smiled．No tears for us．We were doing what we had loved to do for more than fifty years．It was our last dance---forever unforgettable．I wouldn't have missed it for the world．

21．The author first danced with Dar whenA．
A．they were still in their teens
B．they began to date each other
C．they began to share their lives
D．Dar returned from the South Pacific
22．What does the author mean by the underlined sentence in paragraph 3？D
A．Her dad didn't like Dar's father．
B．Her dad was not interested in the dance．
C．Her dad was too focused on his daughter．
D．Her dad thought his daughter danced better．
23．How did the author feel when she danced with Dar for the last time？B
A．Regretful．
B．Content．
C．Heart-broken．
D．Concerned．
24．Which of the following can be the best title for the text？B
A．My Unforgettable Dancing Partner
B．Dance Together to the Last
C．My Last Dance with Dar
D．The Best Dancers．

6．Smith先生是一位加拿大籍教师，今天他给你们做了一个讲座，介绍了有关加拿大的情况．请你根据Smith先生的讲座，写一篇报告，向全校同学介绍加拿大的有关情况．词数100左右．要点包括：
1．加拿大是世界第二大国；地理位置；
2．人口稀少，全国人口约3200万，居民主要讲法语和英语；
3．气候区域差别很大；
4．多湖泊，淡水资源丰富；森林资源丰富．

5．假段定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有10处语言错误，每句中最多有两处．错误仅涉及一个单词的增加、删除或修改．增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词．删除：把多余的词用（\）划掉．
修改：在错的词下画一横线，并在该词下面写出修改后的词．
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分．
It is very important for we to be careful about diseases all the time．If you pick up a diseases，see a doctor at once but make sure you don't carry the disease everywhere．In our daily life，don't drink water that is not boiling，for it is very easy to caused a disease from water that is not clean．When you are out of，don't eat food that has kept outside for a long time．You'd better also make sure what the bowls and spoons have been washed in a properly way．

4．The universe began with a"Big Bang"．The earth was just （61）acloud of dust after the"Big Bang"．The earth exploded loudly with fire and rock．（62）They were in time to produce many things，which were to make the earth's atmosphere．As the earth cooled down，water began to appear on （63）the surface．It allowed the earth to dissolve （64）harmful （harm） gases．Then life began to develop．
Small plants multiplied and （65）filled （fill） the first oceans and seas with oxygen．This encouraged the （66）development（develop） of early shellfish and fish．Land animals such （67）as insects，reptiles and dinosaurs appeared after green plants appeared．Small clever animals spread all over the earth．They are putting too much carbon dioxide into the atmosphere，which prevents heat from （68）escaping （escape） from the earth into space．So （69）whether life will continue on the earth for millions of years to come will depend on whether this problem can （70）be solved（solve）．

3．Among national parks，Yellowstone stands out with its large collection of wildlife and beautiful scenery．However，when the busy season ends，winter comes gradually．（36）A unless you're afraid of the cold，there are not many reasons why you shouldn't visit it and enjoy the snow in winter．Here are a few reasons why you should．
The wild life is easier to spot．Because the snow often contrasts （形成对照）with the dark fur of wildlife，（37）E．Although bears don't come out during these months，wolves become much more active than during the summer．Foxes and many other animals are all fighting for survival，making them easily seen out in the open．
（38）B With the beautiful weather of summer in Wyoming，crowds are everywhere in the park．It's hard to walk around because of that．In the winter，however，you can walk on the small wood path in complete silence and take in the sights without the crowds．Isn't it great？
（39）C Although some people hate it after a day or two，everyone loves snow．Yellowstone enjoys about 150to 300inches of snow in the winter．The snow there is very slow to melt．So by the end of the season，snowdrifts（雪堆） can be higher than five feet in the lower places，and twice more than that in the maintains．
The hot springs are much more impressive．During the winter，the water of Yellowstone's hot springs and cold air create thick steam（蒸汽） that fills the air．（40）GThere it quickly builds up frost，making the trees turn white．

A．It turns Yellowstone into a nice snow-covered place
B．The crowds are gone．
C．The snow is in large amount．
D．Doing sightseeing as you want．
E．it makes them easier to find while on your tour．
F．Cross-country skiing is like hiking，but much better．
G．This steam can also reach the trees．

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要求：1．行文须包括提示中的所有内容．
2．行文流畅，过渡自然．
3．词数100左右．
．

1．In my free time，I really like surfing the Internet．After a long day，I want to get me（61）relaxed（relax）．I turn on my computer，wait until it boots up completely，and then I go online．I usually check my email first and then write a few messages（62）tomy family and friends．I sometimes scan the local news headlines at my favourite news website and read up on the（63）latest（late） local and international news．This website often provides video which you can view online．I sometimes order products or service（64）provided（provide） online to save money and time instead of going to a store and（65）buying（buy） what I'm looking for．For example，I（66）ordered（order） a digital camera online yesterday and saved about﹩50．Whatever I do，I realize that there are（67）problems（problem）with using the Internet including illegal tricks，and viruses（病毒），so I'm very careful not to give out my（68）personal（person） information．Furthermore，I don't download or open files I don't recognize．Using the Internet can be fun and（69）aconvenient way of shopping and finding out new information，（70）butyou just need to be careful．

20．Cell Phones：Hang Up or Keep Talking？
Millions of people are using cell phones today．In many places，it is actually considered unusual not to use one．（36）B They find that the phones are more than a means of communication-having a mobile phone shows that they are cool and connected．
The explosions around the world in mobile phone use make some health professionals worried．Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones．Mobile phone companies are worried about the negative publicity （负面报道）of such ideas．（37）EOn the other hand，signs of change in the issues of the brain and head can be detected with modern scanning equipment．In one case，a traveling salesman had to retire at a young age because of serious memory loss．（38）FThis man used to talk on his mobile phone for about six hours a day，every day of his working week，for a couple of years．
（39）DThe answer is radiation．Hightech machines can detect very small amounts of radiation from mobile phones．Mobile phone companies agree that there is some radiation，but they say the amount is too small to worry about．
As the discussion about the safety continues，it appears that it's best to use mobile phones less often．（40）GUse your mobile phone only when you really need it．In the future，mobile phones may have a warning label （标签） that says they are bad for your health．So for now，it's wise not to use your mobile phone too often．

A．They will possibly affect their benefits．
B．In many countries，cell phones are very popular with young people．
C．What do the doctors worry about？
D．What is it that makes mobile phones potentially harmful？
E．They say that there is no proof that mobile phones are bad for your health．
F．He couldn't remember even simple tasks．
G．Use your regular phone if you want to talk for a long time．

19．Canyonlands National Park
Canyonlands National Park is a famous tourist attraction in Utah where visitors can see arches （拱门） and other beautiful rock formations．
Canyonlands National Park is a wild，lonely area of rocks，rivers and desert plants．Only Native Americans，cowboys，and explorers entered this area before the park was set up in 1964．Even today，it is difficult to walk or ride through the park．The roads are still made of dirt．Driving requires a special vehicle．The National Park Service says Canyonlands National Park is wild America．
Rivers created the area as they cut rocks into many different formations．At the center of the park are two deep canyons carved by the Green and Colorado Rivers．Three areas that surround these rivers are included in the park．
One of these areas is called the Maze District．This area includes rock art made by people who lived there more than 2，000years ago．Yet many people today cannot see the Maze District because it is so difficult to reach．The area is one of the loneliest and wildest areas in the United States．
Another area of the park is called the Needles．It includes long，thin，red and white rocks that reach high into the air like fingers on a hand．
A good way to see all the areas of Canyonlands National Park is to fly over it．A onehour trip in a small airplane makes it possible to see the park's red rocks，arches and flat areas where ancient Indian people once lived．
From high in the air，visitors can clearly see the third area of the park-a high broad flat rock known as the Island in the sky．The island was formed between the two rivers．
Another interesting formation is called the Upheaval Dome．This is a huge hole about four hundred and fifty meters deep and one point five kilometers wide．It is considered to be the most unusual geological （地质的） structure in the area．

33．Why is Canyonlands National Park referred to as wild America？B
A．No vehicle is available to go through the park．
B．The park today still remains as it was in the past．
C．There is no access for people to get close to it．
D．A variety of wild animals and plants grow in it．
34．What do we know about the Maze District？C
A．No one is allowed to explore the area．
B．It is known to the outside world．
C．Its rock art dates back over 2，000years．
D．It is the loneliest and wildest place in the US．
35．In order to have a good view of the park，you should go sightseeingA．
A．by air
B．by land
C．by water
D．on foot．

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