Since the gene , called DAF-16 in worms, was found in many animals and in humans, the finding could open up new ways to affect aging ,immunity and resistance in humans the scientists said.
“We wanted to find out how normal aging is being governed by genes and what effect these genes have on other traits such as immunity,”said Robin May , who led the study.
Populations across the world are aging at a surprising pace , bring potentially big challenges for health and social care systems . A study by Danish scientists last year found that half of babies born in rich world today will live to celebrate their 100th birthday . Scientists are eager to find out how people age to try to develop drugs to help them stay healthier lives extend.
“What we have found is that things like resistance and aging tend go hand in hang “ May said in an interview
May’s team compared longevity ,stress resistance and immunity in four related species of worm. They also looked for differences in the activity of DAV-16 in each of the four species and found that they were all quite distinct.
May said DAF-16 was active in most cells in the body and was very similar to a group of human genes called FOXO genes , which scientists believe play a role in the aging process. “The fact that subtle differences in DAF-16 between species seem to have such an impact on aging and health is very interesting and many explain how differences in lifespan and related traits have arisen during evolution，”May said
1.In which section may the text appear in a newspaper?
A Education B Science C Entertainment D Culture
2. According to May ,
A resistance has a lot of to do with aging B FOXO genes can be found in worms
C genes play the same role in difference species D new drugs will change the genes in older people
3.From the text we know that DAF-16
A is a gene that is only found in worms B can make people live longer
C has an effect on aging and immunity D has been quite familiar to scientists
How to make friends with people from a different culture? The rules are as follows:
Appreciate the person
Most Americans like to be recognized as individuals as someone special with unique, personalities. Therefore never say,“you are from America so I want to be your friend.” Also don’t imply that the reason why you approached them is that you wanted someone to practice your English with . That turns people off. Instead try saying,”“you seem like a real nice and interesting person and I would like to get to know you better .’ This way , they are much more inclined to be friendly because you see them as a three dimensional person and appreciate them for who they are in the inside . And by doing so , you not only learn about Americans and practice your English , but also gain a real friend in the process
Quit Calling Us Foreigners.
Please avoid calling a foreigner especially in his face . The word makes people feel like an outsider , and even unwelcome , suggesting separation and insurmountable difference , widening an already existing gap in the situation. When Americans travel , they rarely say,“I’m foreign to your place .” They tend to say ,”I’m new in town . I’m new here.” The reason is because new and unfamiliar things can become old and familiar. But can foreign things become native? You catch my drift.
Just Do It .
Some students like to be told about American culture but are less interested in spending the time and effort to actually experience it .As Americans always say ,“get your hands dirty.” You should have first hands on experience, or you will never really know anything.
Find that Common Language.
Now I just must stress the importance of finding a common language. By that I don’t mean English, Chinese , German ,French,etc. I mean finding something you have in common with another person on a spiritual and philosophical level: likes , dislikes, worldviews, ways of thinking and attitudes toward life. And to start , you must first enhance your knowledge of the particular culture from which your potential
1. The underlined sentence“get your hands dirty” means .
A get involved B talk about American culture C star with dirty work D Don’t wash your hands too often
2. Americans prefer to make friends with those who .
A avoid talking about their homeland B recognize their personalities
C obey rules of communicating with friends D needn’t practice English while playing together
3.According to the passage , which of the following is friendly?
A I am longing to make friends with an American.
B This is my friend Tom , who is a foreigner.
C There must be a gap between us in many things.
D You ‘ve got a great personality
4. In the last paragraph , the author suggests we should
A Learn at least one foreign language well
B find common interests or opinions with our potential new friend
C make sure we can understand each other
D ask where our potential new friends come from
In their book Time to Eat the Dog : The Real Guide to Sustainable Living, Robort and Breanda Vale say keeping a medium-sized dog has the same ecological impact as driving 10,000 km a year in a 4.6 liter Land Cruiser.
“We ‘re not actually saying it is time to eat the dog .We are just saying that we need to think about and know the ecological impact of some of the things we do and that we take for granted.”
Constructing and driving the jeep for a year requires 0.41hectares of land ,while growing and manufacturing a dog’s food takes about 0.84 hectares or 1.1hectares in the case of a large dog such as a German shepherd.
Convincing flesh-eating cats and dogs to go vegetarian for the sake of the planet is a non-starter,
The Vales say .Instead they recommend keeping greener, smaller, and more sustainable pets ,such as goldfish, chickens or rabbits.
The book ‘s playful title, and serious suggestion that pet animals may be usefully recycled, by being eaten by their owners or turned into pet food when they die ,may not appeal to animal fans .
Annoying as the idea may be, the question is valid given the planet’s growing population and limited resources, Robert vale said.
“Issues about sustainability are increasingly becoming things that are going to require us to make choices which are as difficult as eating your dog . It’s not just about changing your light bulbs or taking a cloth bag to the supermarket,” he said
It about much more challenging and difficult issues, he added . Once you see where cats and dogs fit in your overall balance of things , you might decide to have the cat but not also to have two cars and three bathrooms and be a meat eater yourself.
1.. The authors gave their book the playful title to .
A make it amusing B create a vivid image
C show writing skills D arouse people’s concern
2.. In Paragraph 3 the writer mainly wants to tell us .
A the amount of consumed land B the neglected ecological impact
C some familiar examples D some actual figures
3.. What does “sustainability” mean according to the passage?
A Going vegetarian B Raising cats and dogs
C Using a cloth bag D Keeping a greener life
4.. Who may not the idea of “recycling” pet animal?
A Manufactures B Drivers C Animal fans D The authorities
5.. What do the authors thing of living a sustainable life?
A Challenging B Inspiring C Inviting D Touching
My husband is an engineer. Since we met, he has always been the rock in my life. I knew he had his feet 36 planted on the ground ,and it seemed that no matter what else went 37 , he would be the constant one.
Three years of romance and two years of marriage later, I began to feel 38 of him because he never brought me flowers , he never 39 me, and nothing had changed in our marriage.
After 40 , I finally told him I wanted to be 41 . He just sat there , speechless and didn’t even know __42__to say to make me stay . Finally , he spoke ,“What can I do to change your 43 ?”
“I’ll stay if you have a good answer 44 this question,” I replied coldly。“If I asked for a 45
growing on a cliff, and getting it for me 46 certain death, would you still do so ?”
His face grew troubled.“Can I give you the answer tomorrow morning ?” With that , my heart 47 . He couldn’t even give me an answer 48 away.
The next morning , I found he was 49 .However, I found a note under a warm glass of milk . My eyes 50 misty as I was reading it
“Dear, I’ll give you my 51 .
After you do typing for a long time , I need my 52 to do it for you.
Every time you leave the house , you forget your keys . I need my legs to run 53 and open the door for you… that’s why I cannot pick the flower for you….”
With tears 54from my eyes , I opened the door. And there he was , with an extremely worried look on his face, waving the packet he had in his hand in front of me.
Just because someone doesn’t love you 55 you want him to, it doesn’t meant that he doesn’t love you heart and soul.
1.A deeply B firmly C slightly D totally
2.A different B crazy C exciting D excited
3.A liked B tried C fond D tired
4.Afrightened B loved C surprised D lost
5.Asome time B sometime C sometimes D some times
6.A in B up C down D out
7.A what B which C how D when
8.A saying B comment C opinion D mind
9.A to B of C for D about
10.Atree B moon C flower D butterfly
11.Ameant B resulted C caused D led
12.Asank B settled C rose D worried
13.A soon B straight C straightly D quickly
14.Amissed B missing C losing D lost
15.Afell B changed C grew D got
16.Adscriptions B causes C lists D reasons
17.Aheart B fingers C mind D arms
18.A home B at home C out D in
19.Asteaming B sretching C streaming D spreading
20.Alike it B way C how D the way
In my opinion we should never speak to them like that___our parents said something wrong
to us .
A even if B so that C as if D ever since
Great changes have taken place in our school and it is no longer____it used to be.
A when B how C that D what
