Recently some American scientists have given a useful sincere piece of advice to people in industrialized nations that they would be much healthier if they ate more of the same kind of food eaten by humans living more than 10,000 years ago.The scientists say that the human body has changed very little since humans first appeared on the earth, but the way we live has changed greatly. Our body has not been able to deal with these changes in life style and this has led to new kinds of sicknesses. These new sicknesses were not known in ancient times, so they are called “diseases of civilization”. Many cancers and diseases of the
blood system, including heart attacks and strokes ( 中风 ) are examples of such diseases.Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none. Ancient people also got a great deal of physical exercise, but a change in food is one of the main differences between life in ancient times and that of today.Stone-age people hunted wild animals for their meat, which had much less fat than domestic or tame ones ( 家畜 ). They also ate a lot of fresh wild vegetables and fruits. They didn’t have milk or any other dairy products, and they made very little use of grains. But today, we eat a large amount of these. We eat six times more salt than our remote ancestors. We eat more sugar. We eat twice as much fat but only one third as much protein and much less vitamin C.People today probably do not want to live the way people thousands of years ago did, but scientists say that we would be much healthier if we ate 
much the same way as remote ancestors did, cutting the amount of fatty, salty and sweet food.What is the main cause that people suffer from a lot of new sicknesses?
| A．Ancient people did a great deal of physical exercise. |
B．People today have a lot of alcohol. |
C．People today have more tobacco. |
D．Food today is quite different from that of ancient times. |
Which of the following belongs to the dairy products?
| A．Milk | B．Corn | C．Pork | D．Flour |
New kinds of sicknesses have been found because ________.
| A．the human body has changed compared with humans who first appeared on the earth |
B．the way we live has changed a little |
C．our body can’t deal with the changes in life style |
D．the way we live today is proper for the human body |
According to some scientists, Stone-age people were much healthier than people today because they ate a lot of ________.
| A．milk and other dairy products | B．salt and sugar |
C．wild animals, fresh wild vegetables and fruits | D．grain foods |
I think it was my mother who taught me the meaning of honesty. Not because she actually was honest, but because she lied all the time. She felt that the easiest way out of any given situation was generally the best way out. And, for her, that generally meant telling a “little white lie.” As a young child I thought it was kind of cool. And, naturally, when I would come to her with a concern or question wondering what I should do, she generally advised me to lie.
“Mom, I told Theresa that I would go over to her house, but now I would rather go to Sue’s house to play.”
“Tell Theresa you’re sick,” she would advise. And generally I did. But I didn’t seem blessed with her lack of conscience. On many painful occasions Theresa would find out that I really went to Sue’s house without her. These occasions taught me that it is more painful to be caught in a lie than it is to tell the truth in the first place. I wondered how it was possible that my mother had never learned that lesson.
I started thinking of all the lies that I’d heard her tell. I remembered the time she told someone that her favorite restaurant had closed, because she didn’t want to see them there anymore. Or the time she told Dad that she loved the lawn-mower he gave her for her birthday. Or when she claimed that our phone lines had been down when she was trying to explain why she hadn’t been in touch with a friend of hers for weeks. And what bothered me even more were all the times she had involved me into her lies. Like the time she told my guidance counselor that I had to miss school for exploratory surgery, when she really needed me to babysit. And it even started to bother me when someone would call for her and she would ask me to tell them that she wasn’t there.
So, I started my own personal fight against her dishonesty. When I answered the phone and it was someone my mother didn’t want to talk to, I said, “Louise, mom is here, but she doesn’t want to talk to you.” The first time I did it, she punished me, but I refused to apologize. I told her that I had decided that it was wrong to lie. And the next time it happened I did the same thing. Finally, she approached me and said, “I agree that lying is not the best thing to do, but we need to find a way to be honest without being rude.” She admitted that her methods weren’t right, and I admitted that mine were a bit too extreme.
Over the past few years, the two of us have worked together to be honest—and yet kind. Honesty should mean more than not lying. It should mean speaking the truth in kindness. Though I started by trying to teach my mom the importance of honesty, I ended up gaining a deeper understanding of the meaning of the term. The author’s mother __________.
| A．thought white lies were not lies |
| B．helped the author get out of trouble with white lies |
| C．told the author to lie when in trouble |
| D．taught the author the importance of being honest |
The author __________.
| A．was thankful to her mother’s advice |
| B．felt more awkward when being caught lying |
| C．found that telling the truth hurt more than telling a lie |
| D．felt guilty when hurting people with her honesty |
It can be inferred that the author’s mother __________.
| A．met her friends in the same restaurant regularly |
| B．didn’t get along with the author’s teachers |
| C．was not popular among her friends |
| D．wanted to have something else for her birthday |
Finally the author and her mother agreed that __________.
| A．kind-heartedness is more important than honesty |
| B．appropriate methods are the key to telling a good lie |
| C．honesty is defined as kindness as well as truthfulness |
| D．absolute honesty is basic to good interpersonal relationships |
You'd be forgiven for thinking that running after children each day would leave parents in the best shape of their lives.But a study has found that the mothers and fathers of young children are more unhealthy than their childless peers(同龄人）.
Mothers with young children are heavier and eat more calories and fatty foods,and consume more sugary dinks than chidless women,scientists said.And both sexes are less active than those in their age group without children.
Parents often choose quick,easily preparesd foods that are high in fat and calories,and by choosing these foods they may in turn serve them to their children,forming a cycle of unhealthy diet.
Dr.Berge,one of the study authors,said:“This isn't a study about blame,this is about spotting a very high-risk time period for parents that doctors should be aware of ,so they can offer solutions(解决办法）.”
According to the study ,mothers ate more fatty foods and drank about seven sugary drinks weekly,equal to about four chidless women.They also had an average of 2,360 calories daily,368 calories more than women without children,With that many calorise,women that age would need to be active to avoid to avoid gaining weight.
Fathers ate about the same amount of daily calories childless men and both had an average boby-mass index(指数）,but fathersgot less physical activity—about five hours weekly ,compared to almost seven hours among chidless men.
The study has several limitations－there's no data on how many women reccently had babies.Ther's also no information on the number of single parents,who likely face diet and exercise challenges.Sarah Kriger,an American dietician who works with new mothers said some of the mothers may have had postpartum(产后）depression,which might affect their eating and exercise habits.What does the author mainly aim to tell us in the passage?
| A．Childless couples live a much happier life than those with children. |
| B．Mothers will be unhealthy because of the postpartum deprdession |
| C．Couples of young children eat more fatty foods and lead unhealthier lives. |
| D．Fathers tend to eat high calorie foods because they should run after thrie children. |
The underlined part“in the best shape”in the first paragraph means that a person.
| A．is busy and tires | B．has a most harmonious family |
| C．enjoys the most happiness | D．is in the most healthy condition |
Which of the following is NOT mentioned about mothers with children?
| A．They are less active |
| B．They eat unhealthy foods |
| C．They may feel unhappy aftre having babies |
| D．They may lose their jobs aftre having babies |
What Dr.Berge says in Paragraph 4 suggests that.
| A．Parents should pay more attention to their chidren |
| B．doctors should do something with parents'high-risk time period |
| C．the study has drawn attention of doctors and young parents |
| D．parents should not be blamde for having an unhealthy lifestyle |
We can learn from the last paragraph that.
| A．the result of the study result in aan unscientific way |
| B．the study was carried out in an unscientific way |
| C．single mothers are surely facing quyite different situation |
| D．postpartum depression will help mothers to lead a healthier lirf |
Roslyn Hing School on long Island recently started a pilot program using iPads in some classrooms.
A growing number of schools across the U.S.are multimedia,history through gamse and math with step-by -step animation(动画）of complex problems.
As part of a pilot program,Roslyn High School handed out 47 iPads on Dec.20,2010 to the students and teachers in two humanities(人文学科）classes. The school district hopes to provide iPads eventually to all 1,100 of its students.
The iPads are to be used in class and at hom during the school year to replace texbooks,allow students to correspond with teachers and tum in papers and homework tasks,and preserve a rocord of student work in digital files.
“It allows us to extend the classes beyond these four walls.”said larry Reiff,an English teacher at Roslyn who now posts all his course mateials online.
But educators are still divided over whether practices to give every student a laptop have made a difference academically.
“Thre is very little evidence that kids learn more,faster of better by using these machines,”said Larry Cuban,a retried professor of eduction at Staford University.“IPads are excellent tools to attract kids,but then the fieshness wears off and you eget int hard-core problems of teaching and learning.”
But school leaders say the iPad is not just a cool new toy but rather a powerful and multifunctional tool with a number of applications,including thousands with educational uses.
“If there isn't an application that does something I need ,there will be sooner or later,”said Mr.Reiff,who said he now used an application that includes all of Shakespare's plays.The program of using iPads in class is .
| A．widely accepted by most schools in the United States |
| B．only an experimental one carried out in some schools |
| C．a compulsory one carried out by the U.S government |
| D．encouraged and organized by the iPad company |
The underlined part “these four walls”in paragraph 5 refers to.
| A．school dormitory | B．school campus |
| C．teacher's office | D．school classroom |
We can use iPads to do the following at school except.
| A．replace the school textbooks | B．keep digital record of homework |
| C．judge the teachers'teaching | D．communicate with teachers |
The school leaders tink highly of the iPad mainly because it is .
| A．cool and interesting | B．powerful and helpful |
| C．multifunctional and expensive | D．attractive and vivid |
We can infer from the passage that.
| A．most old teachers are against the pilot program |
| B．students have achieved a lot after using iPads |
| C．teaching will become less important with the help of ipads |
| D．iPads will be used is more and more schools in the US |
Ants have a reputation for strength,organization and teamwork.But researchers have now discovered that a key secret to the success of ants is their ability to identify the importance of age in the work place.
A study of Gentral American leaf-cutter ants has shown that the younger and stronger members are give the toughest job of cutting therough the leaves they harvest.Their sharp youn teeth do this job effectively,but as they get older their teeth become relatively worn and blunt.
But rather than being retired or abandoned by the group,the ageing ants are given a new role more suyted to their physical abilities.They become carriers and teansport the leaves back to the kingdom where they are harvested for food.
The findings by researchers from the University of Oregon and the Oregong State University support previous research showin the survival of a leaf-cutter kingdom depends on the efficiency(效率）of is workers.
“Cuting leaves is hard work,”said Dr.Robert Schofield,who led the research team.“Much of the cutting is done with a V-shaped blade(刀片）between teeth on their jaws.This blade starts out as sharp as the sharpest razor blade that humans have developed.”But over rime the teeth become blunter and the cutting job slows down.The team estimated that,because of this age-related wear,a colony(蚁群)spent twice the energy cutting leaves than it would if all the ants had sharp blades.Its findings support the idea that wear and break can be significant problems for insects as well as largre animals.
Like humans,leaf-cuttre ant recognize that older members of the group can still make a worhwhile contribution to society.“This study shows an advantage of social living that we are familiar with,”said Dr.Schofield.The younger and stronger ants do the toughest job because.
| A．they can teansport the leaves effectively |
| B．they have a sharp blade to cut leaves |
| C．other members are busy with other work |
| D．they can finish the job in a better organized way |
The undrelined word“blunt”in the second paragraph can be replaced by.
| A．quite loose | B．less sharp |
| C．quite fragile | D．more dirty |
What happens to the ants when they become old?
| A．They no longer hve work to do. |
| B．They keep doing the same work. |
| C．They have to leave and live on themselves. |
| D．They are given a new worthwhile job. |
It can be learned from the passage that .
| A．Dr.Schofield is the first to research leaf-cuttre ants |
| B．older ants are more powerful in carrying leaves |
| C．large animals can also suffer from some kind of wear |
| D．leaf-cutter ants are the most lever ants in the world |
What can be the best title for the passage?
| A．The key secret to the success of ants |
| B．The developed structure of ant colony |
| C．The most challenging job for leaf-cutter ants |
| D．No V-shaped blade,no success of ants |
Become a professional dog trainer, dog walker or pet sitter with our expert education adn lifetime business support.
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◆ We help you create a profitable and successful business from the bottom up with little overhead costs.
◆ We have 10 years lf animal care experience.
◆ We run a Dog Training business making over$150,00per year.
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◆ Hands-on experience with animals and customer relations.
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Dog Trainers Course
In this 2 week course you will be taught how to run a profitable and enjoyable dog training business.
You will have hands on experience training and caring for at least 12 dogs ofall sorts ranging in size from a toy poodle to an Anatolian Shepherd.
You will leam about all available training techniques and equipment so you can provide personalized training for four customers.
We will train you how to run classes and private in-home lessons.
How to run a safe and secure kennel(狗舍）including advance animal health care.
Dog Walkers and Pet Sitters Course
In this 1 week course you will have experience caring for over a dozen dogs,parrots,chickens, ducks,cats,and horses.
We will teach you the secrets of successful dog walkers with hours of dog ,parrots,chickens,ducks,cats,and horses.
We will teach you the secrets of successful dog walkers with hours of walking experience.
We will teach you how to wash dogs and horses.
We will teach you how to properly care for cats and birds.Top Dog Trainer School aims to .
| A．help people to be excellent experienced walkers |
| B．teach people how to do business successfully |
| C．help people to start a career related with animals |
| D．eam some money by giving diplomas to its leamers |
We can infer from the passage that the Anatolian Shepherd,compared with a toy poodbl,is .
| A．much more expensive to buy | B．much smaller in size |
| C．more difficult to care for | D．more troblesome in training |
Which of the following is not a peomise made by the dog trainer school?
| A．To start your ownbusiness with affordable money. |
| B．To make a fortune after the training in the school. |
| C．To have wide experience in animal care. |
| D．To find a satisfactory job in this school. |
Through the courses you will learn.
| A．the secrets of how to train the horses |
| B．how to take care of some pets and birds |
| C．how to search for business chanses on the internet |
| D．how to keep your customers'houses clean and healthy |
We can resd the passage in the part of a newspaper.
| A．entertainment | B．advertisement | C．science | D．business |