Unit 8 Adventure.doc

Unit 8 Adventure
一、单项填空
1．With so much water being used in the bathroom，it is no________ that more environmentally friendly technologies have come out to make better use of water resources.
A．surprise B．need C．question D．doubt
2．She always differs________ me________ how to spend the vacation.
A．on；with B．with；on C．at；with D．from；in
3．—Rose lost her job again.
—Don’t worry.There is ________ work for girls of her age.
A．too much B．a number of C．plenty of D．quantity of
4．If your race car isn’t insured，you may________ losing everything when it hits something solid.
A．delay B．deny C．avoid D．risk
5．The parents will be ________ unless they know that their children are safe and sound.
A．eager B．nervous C．anxious D．conscious
6．Haven’t you been thankful for the preparations she________ for the party？
A．had B．made C．did D．paid
7．They________ the train until it disappeared in the distance.
A．saw B．watched C．noticed D．observed
8．The charges________ from 5 yuan to 10 yuan.
A．change B．vary C．differ D．rank
9．—Is there any________ to the time that I can stay here?
—Yesyou must leave here before he comes back.
A．number B．length C．limit D．matter
10．—Are you free after school?
—Sorry，I’ve planned to treat a friend of mine to dinner________ for his help.
A．in order B．in return C．in turn D．in honour
11．You need a break.Why not take a week _ from work？
A．off B．away C．up D．along
12．None of us expected the chairman to________ at the party.We thought he was still in hospital.
A．turn in B．turn over C．turn up D．turn down
13．It’s important for advertisers to________ their message________ customers.
A．get；across to B．make；known
C．get；down D．make；knowing to
14．East of our school________ two companies________ make electric motorbikes.
A．are；that B．is；where
C．is；that D．are；where
15．I saw Jack ________ by the police.
A．taken away B．take away
C．being taken away D．both A and C
二、阅读理解
It might seem hard to imagine that a bad tooth could be deadly.But doctors in the Washington area say a twelve­year­old boy died last month of a tooth infection that spread to his brain.They say it might have been prevented if the boy had received the dental care he needed.
Experts at the National Institutes of Health say good dental care should start at birth.They say breast milk is the best food for the healthy development of teeth.Breast milk can help slow bacterial growth and acid production in the mouth.
When baby’s teeth begin to appearyou can clean them with a wet toothbrush.Dentists say it is important to find soft toothbrushes made especially for babies，and use them very gently.
The use of fluoride(氟化物) to protect teeth is common in many parts of the world.This natural element is often added to drinking water supplies.The fluoride mixes with enamel(釉质)，the hard surface on teeth，to help prevent holes，or cavities from forming.
But the American Academy of Pediatric Dentistry points out that young children often swallow toothpaste when they brush their teeth.The group notes that swallowing fluoridated toothpaste can cause problems.So young children should be carefully supervised when they brush their teeth.And only a small amount of fluoridated toothpaste，the size of a green pea，should be used.
Parents often wonder what effects sucking a thumb or sucking on a pacifier might have on their baby’s teeth.Dental experts generally agree that this is fine early in life.
The American Academy of Family Physicians says most kids stop sucking their thumbs by the age of four.If it continues，the group advises parents to talk to their child’s dentist or doctor.It could influence the correct development of permanent teeth.
语篇定位
本文是一篇新闻报道。人们很难想象牙病会致命，但是华盛顿地区的医生们说，上个月一个12岁的男孩死于蔓延到大脑的牙病感染。文章强调了保护牙齿的重要性。
长难句分析
But doctors in the Washington area say a twelve­year­old boy died last month of a tooth infection that spread to his brain.
该句中的that引导一个定语从句，其中spread to意为“传播到，蔓延到”。句意为：但是华盛顿地区的医生们说，上个月一个12岁的男孩死于蔓延到大脑的牙病感染。
16．The boy with a bad tooth died because ________.
A．his tooth disease was very deadly
B．the doctor refused to treat him properly
C．he didn’t receive timely treatment
D．something was wrong with his brain
17．All the following statements are good to teeth except that ________.
A．children live on breast milk every day
B．children begin to brush their teeth when they are old enough
C．children use fluoride toothpaste to brush their teeth
D．children form the habit of sucking their thumbs
18．The underlined word “supervised” in the fifth paragraph means “________”．
A．watched and directed B．taught and helped
C．praised and advised D．led and pointed out
19．Which one of the followings is NOT true according to this passage?
A．Dental care should be given to babies as soon as they are born.
B．Special toothbrushes should be used for babies.
C．Breast milk and fluoride are helpful to protect baby teeth.
D．Dental experts suggest stopping babies sucking their thumbs.
20．The best title of this passage is “________”．
A．The reason of a twelve­year­old boy’s death
B．Baby teeth should be cared for from birth
C．Breast milk and fluoride are important
D．How to help young children form good habits
三、任务型读写
Attention deficit(不足)hyperactivity(活动过度) disorder is known by the letters A．D.H.D.Children with A．D.H.D.might have trouble paying attention.They might not seem to listen and might forget things.They might not be able to stay seated or play quietly.They might talk too much，act and speak without thinking about the results of their behavior.These are among the signs named on the website of America’s Centers for Disease Control and Prevention.
Doctors usually identify the disorder in children.But experts say the behaviors often last into adulthoodResearchers have been looking for the cause or causes of attention deficit hyperactivity disorder.Now, a brain­imaging study offers more evidence that could lead to new ways to treat it.Researchers say they observed shortages in the brain’s reward system in patients with A.D.H.D..The study found that levels of some proteins were lower than normal.Nora Volkow, director of the National Institute on Drug Abuse, says the lack of attention and self­control that mark A.D.H.D. could be caused by problem in the flow of dopamine(多巴胺). She says people might have difficulty completing an activity if they cannot expect some kind of reward in return. Researchers studied the pathways on which dopamine travels and A.D.H.D. Doctor Volkow says the researchers then compared the pathways to those of 44 adults without the disorder. “There is a lower concentration of dopamine markers in the brain of individuals with A．D.H.D., specifically in the areas of the brain that are involved with reward and motivation. And the dopamine levels are directly linked to the severity of the patient’s inattention，”she says.
The study used brain images taken at Brookhaven National Laboratory in New York State. Jack Wang is chairman of the Brookhaven medical department. He says the finding might also help explain why people with A．D.H.D.are more likely to abuse drugs or overeat. He says they might be attempting to increase their dopamine levels to make up for the deficits in their reward system.
Title
•The Finding of 21. .
The 22. of children with A.D.H.D.
•They are lacking in 23. .
•Perhaps they don’t seem to listen.
•Perhaps they are 24. .
•Perhaps they can’t sit for 25. or play quietly.
•They might talk too much，act and speak without 26. the results of their behavior.
The 27. of A.D.H.D.
•Patients with A．D.H.D.are28. of brain’s reward.
•Levels of some proteins are lower than normal.
Levels of dopamine are 29. as well.
Reasons of abusing drugs
•They are trying to 30. their dopamine.
参考答案
1.A 2.B 3.C 4.D 5.C 6.B 7.B 8.B 9.C 10.B
11.A 12.C 13.A 14.A 15.D 16.C 17.B 18.A 19.D 20.B
21.A.D.H.D 22.signs/symptoms 23.attention. 24.forgetful 25.long 26.considering 27.causes 28.short
29.low 30.increase/raise