题目内容

3.Weight loss is a hard topic.Lots of people aren't satisfied with their present weight,but most people aren't sure how to change it.You may want to look like the models or actors in magazines or on TV,but those goals might not be healthy or realistic(现实) for you.(36)D.
So what should you do about your weight control?
(37)E The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to talk to a doctor or dietitian(营养学家). (38)G If it turns out that you can benefit from weight loss then you can follow a few of the simple suggestions listed below to get started.
(39)CPeople who lose weight quickly by crash dieting(快速减肥) or other extreme measures usually gain back all of the pounds they lose,because they haven't permanently(永久地) changed their habits.Therefore,the best weight management ways are those that you can keep for a lifetime.
Small changes are a lot easier to stick with than large ones.Try reducing the size of what you eat.(40)AOnce you have that down,start gradually introducing healthier foods and exercise into your life.
It's a good idea to keep a healthy weight because it's just that:healthy.

A.Try giving up regular soda for a week.
B.Try to pay attention as you eat and stop when you're full.
C.Weight management is about long-term success.
D.Besides,no magical(有魔力的) diet will make you look like someone else.
E.Being healthy is really about being at a weight that is right for you.
F.Changing from whole to non-fat or low-fat milk is also a good idea.
G.They will compare your weight with healthy standards and help you set goals.

分析 本文是一篇选句填空阅读,属于说明文,减肥是一个很难的话题,很多人并不满意他们目前的体重.但大多数人不确定如何改变你可能想要看起来像杂志或电视上的模特或演员,但这些目标可能是不健康的或现实的.本文以此展开,主要讲述了体重管理的方法.

解答 36.答案:D.句意:另外,没有神奇的饮食会让你看起来象另外一个人. 根据下文"So what should you do about your weight control?"可知,所以你应该怎么做控制你的体重.故此处D符合语境.故选D.
37.答案:E.句意:健康事实上是拥有一个适合你的体重.根据"The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to talk to a doctor or dietitian(营养学家)."可知,找出你什么有一个健康的体重或你需要增重减重的最好的办法是与医生或营养师交流.故此处E符合语境.故选E.
38.答案:G.句意:他们会比较你的体重与健康标准作比较并和帮助你设定目标.根据"If it turns out that you can benefit from weight loss then you can follow a few of the simple suggestions listed below to get started."可知,如果事实证明你可以受益于减肥你可以遵循一些简单的建议下面列出的开始.故此处G符合语境.故选G.
39.答案:C.句意:体重管理是长期坚持的成功.此处与下文的"the best weight management ways are those that you can maintain for a lifetime"相呼应.故选C.
40.答案:A.句意:努力放弃苏打饮料一个星期.根据"Once you have that down,start gradually introducing healthier foods and exercise into your life."可知,一旦做到后,开始逐渐引入健康饮食和锻炼融入你的生活.故此处A符合语境.故选A.

点评 本文是一篇选句填空阅读,题目主要考查文章内容理解以及上下文联系.做题时学生应仔细阅读原文,把握文章主要内容,联系文章上下文内容并结合所给选项含义,从中选出正确答案,一定要做到有理有据,切忌胡乱猜测.

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13.Does the Yangtze River still have baiji(白鳍豚),the graceful,grey dolphin with tiny eyes and a long narrow beak?
Since November 6,a team of scientists from China,Switzerland,the United Kingdom,the United States,Germany and Japan had been searching for any sign of the freshwater dolphin in the middle and lower sections of the river.After six weeks,they came back empty-handed.Wang Ding,head of the team,said he had seen a sharp drop in the baiji population over the past few decades.However,he was still unwilling to call the species extinct and added,"We will try every effort to save them as long as they are not found to be extinct."
As one of the world's oldest dolphin species,the baiji is shy and nearly blind.It dates back about 20 million years and is found only in the Yangtze River.It's listed as one of the 12 most endangered animal species in the world.
Around 400 baiji were believed to be living in the Yangtze until the 1 980s.In 1997,a survey spotted 13.Two years later their number was down to zero.
  The rapi d disappearance of this dolphin over the past two decades coincided(巧合) with the rapid expansion of economic development along the river.Resea rchers on some dead baiji collected in recent years showed that more than 90 percent of the deaths were caused by human activities.
One reason is that over-fishing has cut the dolphin's food sources.Dams built along the river and neighbouring waterways have also kept them from swimming into and out of their habitats.Meanwhile,waste discharge(排放) has seriously polluted the river.And heavy river traffic has greatly reduced their living space.
The disappearance of the baiji would be the first case of a large aquatic(水生的) mammal being driven to extinction since hunting killed off the monk seal around 1952.
42.This passage mainly tells usA.
A.the fact that Baiji is in danger and the reason why its number reduces
B.people are trying efforts to save Baij i as long as they find them
C.human activities have caused 90 percent of Baiji's deaths
D.how serious the pollution is long the Yangtze River
43.It is known from the passage thatB.
A.scientists from foreign countries have searched for Baiji for 6 years
B.Baiji is a large aquatic mammal which is in danger of extinction
C.Baiji becomes endangered all because of human's activities
D.there are 12 endangered species altogether in the world
44.We can infer from the passage thatA.
A.riverside constructions have affected the living environment of animals
B.Baiji is one of the world's oldest species and lives longer than humans
C.it is the waste discharge that has poisoned Baiji in Yangtze River
D.nowadays scientists are no longer able to save Baiji at all
45.This passage is most probably taken fromD.
A.a student's diary              B.a tour guidebook
C.a Biology textbook              D.a science magazine.
14.(36)DIf you are growing tomatoes in your backyard for sale,you are producing for the market.You might sell some to your neighbor and some to the local manager of the supermarket.But in either case,you are producing for the market.(37)G If people stop buying tomatoes,you will stop producing them.If you take care of a sick person to earn money,you are producing for the market.If your father is a steel worker or a truck driver or a doctor or a grocer,he is producing goods or service for the market.
(38)CYou may spend money in stores,supermarkets,gas stations and restaurants.Still you are buying from the market.When the local grocer hires you to drive the delivery truck,he is buying your labor in the labor market.
(39)A But for each person or business that is making and selling something,it is very concrete(具体的).If nobody buys your tomatoes,it won't be long before you get the message.(40)F It is telling you that you are using energies and resources in doing something the market doesn't want you to do.

A.The market may be something abstract(抽象的).
B.The sellers are always smarter than buyers.
C.When you spend your income,you are buying things from the market.
D.The market is a concept.
E.One has to make his ends meet when shopping.
F.The market is telling you something.
G.Your efforts are being directed by the market.
18.A healthy amount of sunshine may be the secret to staying young.British scientists have discovered.
Vitamin D is produced naturally by the skin in response to(对…的反应) sunlight and may help to slow the ageing process and protect against heart disease,according to the study.
Researchers from King's College London studied 2,160women aged between 18and 79,looking at their telomeres---a biological marker of ageing found in DNA.As people get older,their telomeres get shorter and they become more susceptible(易受伤害的) to certain illnesses.
But the study found women with high levels of vitamin D had comparatively longer telomeres---a sign of being biologically younger and healthier.
The study suggests vitamin D may help to slow down the ageing(变老,老化) process of DNA,and therefore the ageing process as a whole.
Lead researcher Dr Brent Richards said,"These results are exciting because they show for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D."This could help to explain how vitamin D has a protective effect on many ageing related diseases,such as heart disease and cancer."
Professor Tim Spector,a co-author of the report,added,"Although it might sound absurd(荒唐的),it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process.
Vitamin D made by the action of sunlight on the skin accounts for 90percent of the body's supply,but lower levels can also be got through food such as fish,eggs and breakfast cereals(粥).
Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.
25.A certain amount of sunshine helps people stay young becauseD.
A.people feel happy and energetic in the sun
B.sunshine protects people against heart disease
C.vitamin D makes one's skin look young and healthy
D.vitamin D may help to slow the ageing process.
26.From Brent Richards,we know thatD.
A.sunlight causes skin cancer to people with high level of vitamin D
B.the study generally has a healthy effect on the general ageing process
C.vitamin D can only be got from fish,eggs and breakfast cereals
D.the higher levels of vitamin D people have,the more slowly people may age
27.What can we infer from the passage?C
A.Telomeres are important as they are signs of ageing of the DNA.
B.Sunlight can be dangerous as it causes skin cancer.
C.Sunlight does more good than harm to our health.
D.Vitamin D can also be gained from food.
28.What is the best title of the passage?B
A.Secret of Staying Young    
B.Vitamin D Helps Slow Ageing
C.Sunlight and Vitamin D    
D.Sunlight and Health.
8.Eat like a king in the morning,a prince at noon,and a peasant at night.This saying is all about the importance of breakfast.And now scientists can tell us just why it's so important.According to a study carried out at Imperial College London,UK,skipping the first meal of the day not only means you eat more at lunch,but also that your brain wants to find more unhealthy foods.
The study suggests that there is a special part of our brain called the orbitofrontal cortex (眶额皮层),which plays an important part in making choices about what we eat.It is used for identifying the taste of food,especially when skipping breakfast.It is more likely to target high-calorie foods when you're on an empty stomach.
Scientists did an experiment on this.Dr Tony Goldstone from Imperial College London,scanned (扫描) the brains of 21men and women,around the age of 25.On the first day,these people skipped breakfast before the scans.On the second day,they had cereal (谷物),bread and jam as breakfast.After the scan on both days,they had their lunch.
When the volunteers had skipped breakfast,they ate around 20percent more at lunch,compared with days when they had eaten breakfast.Their brain scans also showed the orbitofrontal cortex was especially responsive to high-calorie foods."We believe that bit identifies the value of foods-how pleasant,how delicious something is,"Goldstone told The Guardian.
28.From Paragraph 1,we learn thatA.
A.scientists found out why eating breakfast is important
B.it's easy to lose weight without breakfast
C.there's no need to have good food for supper
D.eating breakfast makes your brain smarter
29.Which is the correct order for the experiment on the first day?C
①The volunteers skipped breakfast.
②The volunteers had lunch.
③The volunteers had a brain scan.
A.①②③B.③②①C.①③②D.③①②
30.Which of the following is NOT true about the orbitofrontal cortex?B
A.It is part of our brain.
B.It tells people to eat breakfast.
C.It decides which food we like.
D.It is active toward high-calorie foods.
31.Which of the following can be the title for this passage?A
A.Breakfast still most important
B.Three meals a day
C.Experiments on breakfast
D.Researches on lunch.
15.Seal(海豹) seizes raft
This seal really rocked the boat when he found himself an unusual place to hang out.After the seal came across a boat in the harbor where he lives,he fell inside and wouldn't budge for four days.
"One morning the seal just pulled himself aboard,"says Ed Stubbings,who owns the boat-turned-bed.Probably thinking the boat was a rock,the seal made himself at home.The seal didn't move an inch-----not even to eat or drink.
Stubbings was a little worried that the 500-pound animal might sink it.Luckily on the fifth day,the seal fell back into the water and swam off.
Alligator(短吻鳄)gets new tail
When Mr.Stubbs the alligator swims through his pool at the Phoenix Herpetological Society,he looks like any other gator-----except that his tail is made of rubber.Mr.Stubbs is the first alligator known to wear an artificial tail.
Mr.Stubbs was brought to the society nine years ago."His tail was missing when he arrived,"says President Russ Johnson.Mr.Stubbs couldn't walk or swim properly."We showed him how to swim in the water,"Johnson says."But that hurt his back."Later,the scientists used rubber to build an artificial tail attached to Mr.Stubbs's back legs."Once we put the tail on him,he walked with ease,"Johnson says.
Dog delivers papers
Morgan started her"paper route"when she was young.One day as Morgan and her owner Bill set out on a walk,she spotted a rolled-up paper.To Bill's surprise,Morgan grabbed the object in her mouth,walked back to the house,and dropped it on the doorstep.Morgan enjoyed the activity so much that she wanted to deliver every paper she saw on her walks.
Now three-year-old Morgan brings the paper to her owner and neighbors,even in bad weather."Morgan has a natural instinct(本能) to carry things with her mouth,"dog behaviorist Pat Miller says."And she feels rewarded by the activity,so she keeps it up."
15.The underlined word"budge"can be replaced byA.
A.move     
B.change     
C.swim      
D.sleep
16.It can be learned that Mr.StubbsC.
A.injured his back                   
B.lost his tail and back legs
C.quickly got used to his new tail      
D.was found by Ed Stubbings
17.What made Morgan deliver papers?D
A.Her owner Bill's praise.
B.Her neighbors'rewards.
C.Pat Miller's encouragement.
D.Her natural ability.

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