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.

1.What does the author mainly aim to tell us in the passage?

2.The underlined part“in the best shape”in the first paragraph means that a person  .

3.Which of the following is NOT mentioned about mothers with children?

4.What Dr.Berge says in Paragraph 4 suggests that    .

5.We can learn from the last paragraph that      .

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.

1.The program of using iPads in class is            .

2.The underlined part “these four walls”in paragraph 5 refers to    .

3.We can use iPads to do the following at school except     .

4.The school leaders tink highly of the iPad mainly because it is       .

5.We can infer from the passage that     .

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.

1.The younger and stronger ants do the toughest job because      .

2.The undrelined word“blunt”in the second paragraph can be replaced by      .

3.What happens to the ants when they become old?

4.It can be learned from the passage that       .

5.What can be the best title for the passage?

Become a professional dog trainer, dog walker or pet sitter with our expert education adn lifetime business support.

Top Dog Trainers School will teach you everything you need to know about running your new business. A diploma from Top Dog Trainers School will take you into an enjoyable careet with animals.

◆ 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.

◆ You will leam how to rank your website at the top of search engines.

◆ Hands-on experience with animals and customer relations.

◆ We guide you through business insurance,taxes,licenses,and more.

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.

1.Top Dog Trainer School aims to            .

2.We can infer from the passage that the Anatolian Shepherd,compared with a toy poodbl,is        .

3.Which of the following is not a peomise made by the dog trainer school?

4.Through the courses you will learn         .

5.We can resd the passage in the     part of a newspaper.

May was born with a cleft palate(腭裂). When she was a little girl, she had to  36 the jikes from naughty chidren who teased her about her misshaped lip. With all the teasing, Mary grew up  37  the fact that she was“diffrernt”. She was  38  that no one, outside her family,could ever love her until she  39  Mrs. Leonard's class.

In Mrs. Leonards' school at that time, it was   40  for teachers to give their children an annual  41  test. However, in Mary's case,  42  her cleft palate, she was hardly able to hear out of one ear.   43 not to let the other children have another“  44 "to point out, she would  45  when her bad ear was tested each year. The “hearing test”was  46 by having a child walk to the classroom door,turn sideways,  47  one ear with a fingre, and then   48  what the teacher whispered. When Mary had to turn her bad ear towards her teacher she would  49  to cover her good ear. She knew that teachers   50  often say things like,“The sky is blue,”or“What color are your shoes?”But not on that day. Surely, God   51  seven words in 

Mrs. Leonard's mouth that   52  Mary's life forever. When the test came, Mary heard:“ I wish you were my little girl.”You can imagine how deeply these words   53  Mary.

Yes, affirming (肯定）words are   54  to say to the people around you. While words from

a godly teacher can soften a heart, words form you can powerfully set the    55   of  another

One's life.

18..

－Could you possilby take to the railway station tomorrow?

The paty last month really gave me a lot of fun. So can we have        this month,Mr.

James?

Many young people just can't live without the Intemet,         they depend on for whatever information they need.

You have a big mouth,Tom. You        have told everybody the secret.

It's certainly hard work.But,      a man who wishes to have a career has to make a great many sacrifices.