欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

14．Imagine having an idea，drawing it on paper，bringing it to a store and seeing it turned into a physical object．This is now possible with the help of 3D printers．Such machines were once used just by universities and big companies．But now，stores with 3D printing services are appearing around the United States．
    Bryan Jaycox and his wife opened The Build ShopLLC in Los Angeles two years ago．The store is filled with tools like a laser cutter，an industrial sewing machine and 3D printers．Bryan Jaycox requires 15an hour to print an object．He also charge safe depending on the size of the object and up to 50 an hour for design and labor services．
    The Jaycoxs also offer 3D printing classes for anyone who is interested．One of the students in a recent class was Ki Chong Tran．He plans to open a 3D printing business in Cambodia．"The demand has been amazing．It's been much more than I would have imagined，"said Ki Chong Tran．
"I think 3D printing is going to be huge． It's going to make a huge impact on society as a whole，"he added．
    Mr Jaycox predicts that within five years，3D printing technology could become more consumer friendly．
    But Ki Chong Tran says even current technology can make a difference in a developing country like Cambodia．"With 3D printing you can give them tools，and you put it in their hands so they are responsible more for their own development． They learn skills beyond just learning English and becoming a tour guide or something like that or working at a bank．You can actually create things that give value to the world，"said Ki Chong Tran．
     He says it's not just Cambodia but anywhere where there is a 3D printer，it can turn a good idea into reality．

61．We learn from Paragraph l that3D printing．A
A．is now available to ordinary people
B．first appeared in the United States
C．can turn your every dream into reality
D．is now only used by universities
62．Bryan Jaycox opened The Build ShopLLC toC．
A．sell 3D printers and different kinds of tools
B．produce all types of printing machines
C．offer 3D printing classes and services：
D．design different types of 3D printers
63．According to Ki Chong Tran，3D printingC．
A．is now widely used in Cambodia
B．will change our daily life completely
C．has a huge market potential in Cambodia
D．is useless for developing countries
64．In Mr Jaycox's opinion，within five years 3D printing willB．
A．make it easier to do business
B．be accessible to all consumers
C．change the way of social contact（交往）
D．bring about more profits to the sellers
65．How will 3D printing technology benefit developing countries according to the text？D
A．It helps the people work efficiently at a bank．
B．It will promote the learning of English
C．It will accelerate the development of tourism．
D．It offers them a new way of development．

13．Most schools in America do not have the latest equipment in laboratories．It is just too costly．But the eastern state of Maryland and8 non-profit group found a way to make such equipment available during the school year．They put it on a bus!
    The 13-meter-long Maryland BioLab is a mobile classroom filled with equipment that lets students explore many kinds of science．It travels around the state visiting schools．It has everything from biology to forensic science（法醫(yī)學(xué)）．The mobile lab has been bringing bioscience education to schools around Maryland for more than 10 years，
"It is really nice to get the students in here with hands-on activities．They get really excited and want to be engaged．"said Ms．Mangus，who is in charge of the program．She said that many students finished their experiments and left the bus excited about the possibility of becoming a scientist．
    At the end of each class，Ms．Mangus talked to the students about how she became a scientist．"If we have enough time，we like to take five，ten minutes and talk about us，ourselves．I tell them how I got into science，maybe where I went to school，what I did，and the different kinds of things we could do．"
    Brian Gaines，the chief executive officer of the foundation supporting the BioLab program，said the organization's goal was to help create the next generation of scientists．"We use this program to talk about careers in science-not only science，but science，technology，engineering and math．Students on the bus get real-life experience they do not get in a classroom．"

56．Which of the following is true about the BioLab？B
A．It visits schools around the United State．
B．It's a mobile lab for the schools in Maryland．
C．It is used to replace the ordinary classroom．
D．It is equipped with all kinds of school things．
57．The students are very pleased becauseA．
A．they can do experiments with their own hands
B． they can have face-to-face talks with scientists
C．the bus comes to their school every day
D．they can realize the dreams of being scientists
58．Ms．Mangus talked about her experience toC．
A．make her classes lively and interesting
B．show off her achievements
C．a(chǎn)rouse the students'interest in science
D．get the students more involved in class
59．According to Brian Games，the real purpose of the program is toA
A．help create the future scientists
B．prepare students for future careers
C．improve students'marks in schools
D．save money for the government
60．Which of the following would be the best tide for the test？D
A．Bioscience Education in America．        
B．A New Way to Do Experiments!
C． The Way to Be a Scientist．                
D．A BioLab on a Bus!

12．It's never a real problem for us when the weather gets cold．  We have many different ways of coping with the cold．We can put on more clothes，stay next to a fireplace，turn on the air conditioner or simply travel to a warmer city to spend the winter．But things are not as easy for plants．Unlike humans，plants can't move to escape the cold or generate heat to keep themselves warm．So how do they manage to survive the freezing winter？
    The cold is a big challenge for plants．Their living tissues can be damaged when they freeze．It's like a plant's equivalent（相等物）to frostbite（凍瘡）．Also，the process of freezing and thawing（解凍）can cause air bubbles to form in the plant's water transport system．If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant．
    To live through cold weather，plants have developed three strategies，Some plants，such as oak trees，avoid freezing damage by dropping their leaves，before the winter chill sets in-effectively shutting off the flow of water between roots and leaves-and growing new leaves and water transport cells when the warm spring returns．Other plants，pine trees for example，protect them-selves by narrowing their water transport cells，which makes it easier for cells to travel among air bubbles．The third strateg is also the most extreme．Some plants； die on the ground in winter and start growing as new plants from seeds when conditions get warmer．
    However，these smart strategies were developed very slowly-over millions of years of evolution．This leads scientists to worry that plants may not be able to deal with human-caused climate change，which has only started occurring over the past few decades．Scientists are hoping to find possible ways to save plants from the threat of climate change．

51．What is the text mainly about？B
A．Different ways for people to keep warm．
B．How plants live through the freezing winter．
C．How plants develop the 8tratef；ies to keep warm*
D．The ways to save plants from the cold，
52．If the water transport from roots to leaves is blocked，D．
A．the plant will suffer from f'rostbite
B．a(chǎn)ir bubbles will be formed
C．the plant's living tissues will be damaged
D．the plant will be killed
53．Oak trees protect themselves byA．
A．stopping the water transport from roots to leaves
B．dropping their leaves to grow seeds
C．slowing the flow of water from roots to leaves
D．storing enough water in the roots
54．What does the underlined phrase"sets in"mean in Paragraph3？B
A．stops       
B．begins      
C．leaves      
D．returns
55．What is the main idea of the last paragraph？C
A．Plants can，easily adapt to climate change．
B．Scientists are making efforts to save plants．
C．Climates change is a great threat to plants．
D．Plants are developing new strategies to survive．

11．Parents used to rely on physical punishments to control their children's bad behavior，which has been proven to be very harmful．Therefore，most parents now choose to simply yell，thinking that language probably won't hurt as much．But is that really so？
    Using harsh words such as"lazy"or"stupid"is just as harmful as hitting，according to a new study carried out at the University of Pittsburgh，US．"It cannot reduce or correct their problem behavior，"said Professor Ming-Te Wang，leader of the study，in an interview with The Wall Street Journal．"On the contrary，it makes it worse．"
    In the study，which involved 976 two-parent families，researchers asked the kids about their behavior problems，while asking their parents how often they had yelled at them． Nearly half of the parents admitted that they'd shouted at their children in the past year．Researchers noted that the kids whose parents used more harsh words experienced more behavior problems after-wards，including fighting，stealing，lying as well as symptoms of depression．
"Adolescence is a very sensitive period when kids are trying Lo develop their self-identities（個(gè)性）．When you yell，it makes them feel they are not capable，and that they are worthless and useless，"Wang said．"This may explain why so many parents say that no matter how loud they shout，their teenagers don't listen．          
While harsh yelling can stop bad behavior in the moment，it doesn't teach children to behave how parents want them to，according to Professor Alan Kazdin of Yale University，US．What parents need is to praise their children for good behavior．If parents really need to punish their kids，they should try things like taking away smartphones and reminding them that good behavior will get themback． After all，"we want to teach kids，not hurt them，"said Kazdin．
 
46．How do most parents react to their children's misbehaving now？C
A．Letting them alone．
B．Beating them．
C．Shouting at them．      
D．Praising them．
47．The study finds that using harsh words．A
A．can make things even worse  
B．inspires children to do better
C．corrects children's bad behavior
D．has a better effect than hitting
48．According to Professor Ming-Te Wang，D． 
A．physical punishments are sometimes necessary
B．children are more self-centered in adolescence
C．parents should never punish kids for misbehaving
D．harsh yelling damages children's self-confidence
49．In Professor Alan Kazdin's opinion，parents shouldC      
A．set good examples for their children
B．take away their children's smartphones
C．praise their children for good behavior
D．a(chǎn)lways think in their children's shoes
50．What does the underlined word"them"in the last paragraph refer to？D
A．children            
B．bad behaviors      
C．parents  
D．smartphones．

10．The security industry exists to provide and ensure safety of the population．Teams of developers are constantly working on new devices to better protect not only the people but also their properties．Regular existing technologies such as GPS trackers are also being improved and used in innovative ways to prevent various criminal activities．
Named after Natalia Estemirova，a human rights activist who was kidnapped from her home and murdered within 24 hours，the Natalia Project is a bracelet （手鐲）handed out by the Civil Rights Defenders in hopes of preventing similar tragedies in the future．After all，a majority of human rights activists are situated in constant danger as they fight for freedom and equality．The chunky bracelet was able to produce satisfactory results．Once triggered（觸發(fā)），the bracelets will issue a real-time GPS location of the victim to the Civil Rights Defenders'headquarters．Nearby contacts will also be alerted so immediate action can be taken to rescue the victim．What's most unique about this bracelet is that it will also send an alert to social media platforms such as Twitter and Facebook to notify the public of the attack being placed on the victim．
These bracelets will first be distributed to a small group as funding is still a problem．The first five bracelets were distributed by the human rights organization on Defender's Day in Stockholm，Sweden，on Apr.5，2013．"We would like all human rights defenders at risk to have this alarm，but it costs a lot both for the alarm itself and to build an organization to respond to the alarms and to train the wearers of the alarm．Building a security program around each individual，matched to the specific needs of that person is a complex process．Needless to say，it takes a lot of time and effort to get an alarm up and running to ensure maximum protection for 365 days a year．"
Though the Civil Rights Defenders is an independent non-governmental expert organization，they do receive the support for their hard work through the Swedish Development Cooperation Agency．The potential for this bracelet to prevent kidnapping of regular children and citizens，if made available to the public，will also be endless．
（Note：Answer the questions or complete the statements in NO MORE THAN TWELVE WORDS）
78．What happened to Natalia Estemirova？She was kidnapped and murdered within 24 hours．
79．The Natalia Project aims to ensurethe security/safety of human rights activists．
80．How does the bracelet enable the Civil Rights Defenders'headquarters to take action？By issuing a real-time GPS location of the victim
81．Besides the alarm itself，the cost of the project also includesbuilding an organization to respond to the alarm and training the wearers．．

9．Getting kids to share their toys is a never-ending battle，and forcing them to do so never seems to help．New research suggests that allowing children to make a choice to sacrifice their own toys in order to share with someone else makes them share more in the future．The new findings are published in Psychological Science．
These experiments were conducted by psychological scientists，Nadia Chernyak and Tamar Kushnir of Cornell University．They found that sharing things with others when they are given a difficult choice leads children to think of themselves as people who like to share．It also makes them more likely to act in a pro-social （親社會(huì)的）manner in the future．
Previous research has explained why rewarding children for sharing can backfire．Children come to think of themselves as people who don't like to share since they had to be rewarded for doing so．Because they don't view themselves as"sharers"they are less likely to share in the future．
Chernyak and Kushnir were interested in finding out whether freely chosen sacrifice might have the opposite effect on kids'willingness to share．To test this，the researchers introduced five-year-old children to Doggie，a sad puppet．Some of the children were given a difficult choice：Share a precious sticker with Doggie，or keep it for themselves．Other children were given an easy choice between sharing and putting the sticker away，while children in a third group were required by the researcher to share．
Later on，all the children were introduced to Ellie，another sad puppet．They were given the option of how many stickers to share （up to three）．The kids who earlier made the difficult choice to help Doggie shared more stickers with Ellie．The children who were initially faced with an easy choice or who were required to give their sticker to Doggie，on the other hand，shared fewer stickers with Ellie．Therefore，children did not benefit from simply giving something up，but rather from willingly choosing to give something up of value．
"You might imagine that making difficult，costly choices is taxing for young children or even that once children share，they don't feel the need to do so again，"Chernyak says．"But this wasn't the case：once children made a difficult decision to give up something for someone else，they were more generous，not less，later on．"Chernyak concludes．
74．Dhelps children to share more in the future．
A．Rewarding children for sharing stickers
B．Requiring children to share their favorite toys
C．Allowing children to share what they don't need
D．Encouraging children to share precious things willingly
75．The underlined word"backfire"meansD．
A．serve as a push                  B．have an opposite effect
C．cause anger                      D．a(chǎn)void taking things back
76．Those who were required to share give fewer stickers to Ellie becauseA．
A．it's not their own choice           B．they regret what they did
C．Ellie is not as sad as Doggie        D．they like to share with a real person
77．We can conclude from the passage thatC
A．parents will never find a way to get children to share toys
B．a(chǎn) gift should be given to make up for children's sacrifice
C．making difficult choices may influence sharing behavior
D．children pretend to be generous when they are being observed．

8．

A．rejected    B．eventually   C．various   D．ready    E．commercialize    F．prospect   G．delivered    H．employed    I．samples    J．transplants   K．inevitably

Since its appearance in 2007，researchers at San Diego-based Organovo have experimented with printing a wide variety of tissues，including bits of lung，kidney and heart muscle．Now the world's first publicly traded 3D bioprinting company is getting （41）D for production．In January slices of human liver tissue were （42）G to an outside laboratory for testing．These （43）I take about 30minutes to produce，says Keith Murphy，the firm's chief executive．Later this year Organovo aims to begin commercial sales．
The invention of 3D printing provided a technology now （44）H to manufacture everything from aircraft parts to body parts．But the （45）F of 3D bioprinting is even brighter； to create human tissues for research，drug development and testing，and （46）B as replacement organs，such as a kidney，for patients desperately in need of （47）J．Bioprinted organs could be made from patients'own cells and thus would not be （48）A by their immune systems．They could also be manufactured on demand．
At present only a few of companies are trying to （49）E the production of bioprinted tissues．But Thomas Boland，an early pioneer in the field，says that plenty of others are interested．He also estimates that about 80teams at research institutions around the world are now trying to print （50）C small pieces of tissues such as skin，blood vessels，liver，lung and heart．"It's a wonderful technology to build three-dimensional biological structures．"says Gabor Forgaces，who co-founded Organovo in 2007．

7．Dear David，
I'm glad you would like to share your feelings with me．It's hardly surprising that your feelings of not being"grown up"have come on strongly at this point in your life，just before you're about to become a father．You are asking：will I make a good father？How will I cope？Should I have brought another little person into the world？Can I provide for it？Heeelp!I think nearly every sensitive about-to-be-parent must have these occasional feelings of self-doubt and inadequacy （不適） before the birth and it would be most unusual if you didn't share them．
It's difficult，honestly，to feel grown-up unless you have something less grown-up to relate to．A hen-pecked （懼內(nèi)的） boss may feel like a seven-year-old when he's at home．But as he walks through the office door，and knows he's going to be surrounded by staff looking to him for advice，he grows into a fully mature man．And I think it's a mistake to imagine that we all feel，as we age，a kind of progression of states，from the baby to the adult．Most people feel，on Tuesday，about three years old，and on a Wednesday，around 80．I remember feeling very grown-up at eight，a time when I was weighed down with responsibility．These days，much older，I can，in the company of people I feel at ease with，feel like a young girl．
There's a common remark that"all men are little boys"，but it's not true．It's more true that men often behave like little boys．But nearly all people，at some moments in their lives，are capable of great maturity．
Once your baby arrives，you'll soon feel less childlike，or rather，less often．When your child tries to put its fingers into the electric plug，the adult in you will rise up to prevent it．You'll see you have very little in common with a needy child，particularly if it's looking to you for comfort and support．
Comfort yourself，David，with two truths．One is that your friends laugh when they talk about this subject because they，like you，feel frightened．And remember that people who haven't grown up don't go around talking about the fact that they don't feel grown-up．
Hope my advice will be helpful and good luck to you and your little one．
Sincerely Yours，
Miss Advice
43．According to the passage，Miss Advice thinks David's self-doubtB
A．valuable     B．natural          C．unusual      D．bearable
44．From Paragraph 2，we can learn that people's sense of maturityC
A．will increase with age
B．is obviously seen at home
C．changes with different situations
D．becomes stronger with familiar people
45．Miss Advice holds thatC．
A．a(chǎn)ll men behave like little boys
B．people tend to laugh at the subject
C．men with a baby feel more grown-up
D．people enjoy talking about their immaturity
46．Miss Advice wrote the letter toB．
A．teach people how to grow up
B．offer suggestions to a future father
C．encourage people to be responsible
D．solve problems of the less grown-u．

6．A student was one day taking a walk  with a professor．The professor was very popular with students for his ways of   __11___．When they were walking，they saw lying in the path a pair of old shoes，which they（12）Cbelonged to a poor man who was working in a field close by．
The student turned to the professor，saying，"Let's play a （13）Don him：we'll hide his shoes，and hide ourselves behind those bushes，and wait to see his（14）Bwhen he cannot find them．"with students for his ways of   11．As they w A student was one day taking a walk
The professor said，"We should（15）Camuse ourselves at the expense of the poor．You are（16）B，and may give yourself a much greater pleasure（17）Ahelping the poor man．Let's put a coin into each shoe，and then we will（18）Dourselves and watch how the （19）Aaffects him．"The student did so．Before long，the poor man came across the （20）Ato the path where he had left his coat and shoes．
While putting on his coat he （21）Chis foot into one of his shoes，feeling something（22）B．He bent down to see what it was，and found the coin．（23）Band wonder appeared on his face．He stared at the coin，turning it around，then looked around on all sides without
  （24）Aanyone．He put the money into his pocket，and（25）Cto put on the other shoe，and his surprise was（26）Aupon finding the other coin．
He fell upon his（27）B，looked up to heaven，and let out a sincere thanksgiving in which he spoke of his wife，sick and（28）C，and his children who（29）Dbread，whom this timely help would save from dying．
The student stood there deeply affected，his eyes filled with tears．"Are you not much better（30）Dthan if you had played a trick？"said the professor．

11．A．instruction	B．contribution	C．explanations	D．suggestions
12．A．expected	B．understood	C．supposed	D．doubted
13．A．game	B．role	C．side	D．trick
14．A．regret	B．confusion	C．excitement	D．sorrow
15．A．a(chǎn)lso	B．simply	C．never	D．really
16．A．kind	B．rich	C．brave	D．young
17．A．by means of	B．in case of	C．for fear of	D．with regard to
18．A．cheat	B．treat	C．examine	D．hide
19．A．discovery	B．a(chǎn)ccident	C．experience	D．practice
20．A．field	B．yard	C．garden	D．road
21．A．wiped	B．kicked	C．slipped	D．felt
22．A．wet	B．hard	C．big	D．hot
23．A．Satisfaction	B．Surprise	C．Delight	D．Shame
24．A．seeing	B．meeting	C．calling	D．knowing
25．A．intended	B．pretended	C．continued	D．refused
26．A．doubled	B．decreased	C．shown	D．imagined
27．A．feet	B．knees	C．legs	D．hands
28．A．discouraged	B．frightened	C．helpless	D．careless
29．A．liked	B．earned	C．sold	D．lacked
30．A．puzzled	B．encouraged	C．interested	D．pleased．

5．I had spent about 5years working in a booth，across which was a wonderful comedian and actor．
His name was Moonie and his skit（滑稽短�。﹚as done using （41）D but gestures and noises instead of words．I remember watching his shows and always being （42）C．Even when he was having a （43）A day，he always （44）Cto keep things fun，lively and flesh．That's a very （45）Bthing to do considering I watched him do the same skits several times a day for 5years．
When I heard it would be his last year performing at the fair，I wanted to （46）B，him for all the amazing shows he had done on that stage across from the （47）C where I worked．He was standing with the crowd after one of his last shows of the day，and （48）D each person dropped a （49）B into his big basket，he was pointing at them with a big （50）A and then saying"…No．You're the greatest!"to each one．
I （51）C him and dropped 20into his （52）B，and he turned to me，smiling very brightly，pointing and （53）A with another"…No，you're the greatest!"So I looked at him directly then，and said，"No，Moonie，you are the （54）C．I have been watching your shows for （55）D years，and I just wanted to say"Thank you"for the years of （56）Ashows that you have given me．"
The look on his face said that he was truly touched by that （57）D．Then he politely asked me    what my name was and asked to shake my hand．I （58）Band we shared a very deep moment of mu-tual（相互的）respect and （59）C．
I walked away smiling broadly，（60）A  I know he did too．

41．A．something	B．a(chǎn)nything	C．everything	D．nothing
42．A．disappointed	B．puzzled	C．a(chǎn)mused	D．surprised
43．A．bad	B．pleasant	C．busy	D．funny
44．A．decided	B．refused	C．managed	D．promised
45．A．easy	B．hard	C．common	D．different
46．A．pay	B．thank	C．invite	D．change
47．A．company	B．theater	C．booth	D．stage
48．A．because	B．though	C．if	D．a(chǎn)s
49．A．ticket	B．tip	C．card	D．gift
50．A．smile	B．noise	C．gesture	D．word
51．A．felt sorry for	B．paid attention to	C．got close to	D．caught sight of
52．A．wallet	B．basket	C．hat	D．pocket
53．A．continued	B．welcomed	C．disturbed	D．concluded
54．A．funniest	B．busiest	C．greatest	D．hardest
55．A．two	B．three	C．four	D．five
56．A．a(chǎn)mazing	B．similar	C．cheap	D．familiar
57．A．donation	B．suggestion	C．behaviour	D．comment．
58．A．refused	B．a(chǎn)ccepted	C．a(chǎn)nswered	D．hesitated，
59．A．interest	B．excitement	C．thankfulness	D．pity．
60．A．a(chǎn)nd	B．but	C．for	D．so