Quicker and faster 3-D printers have allowed not just amazing objects to be created, but have started to affect how doctors treat patients.

    We've put together a list of some of the most amazingmedical break throughs made possible with 3-D printing.

Life-Saving Airway

    In 2013, doctors created a new airway for kaiba Gionfriddo, aboy born with an airway that kept collapsing (萎陷). To save his life doctors printed tiny tubes to join together in different shapes and sizes until one finally worked for Kaiba. It was placed in Kaiba's bronchus (支气管) so that it no longer collapsed. Even more remarkably, once the plant was placed it couldstay there. It's designed to eventually be absorbed into the body.

New “Bionic” Hands

    One of the most remarkable ways 3-D printing is now being used is as a way to create prosthetics (假肢). A boy born without an arm named Alex was able to get a new“bionic”hand thanks to it. Last year a college student spent 8 weeks coming up with a special prosthetic design that only cost a few hundred dollars in materials. He said he wanted to create a prosthetic far cheaper than other choices that can run tens of thousands of dollars.

A practice Heart

    In Seattle, doctors have been able to use 3-D printing technology to“practice”risky operations so that they will face fewer surprises in the operating room. Kami Sutton was born with her heart“in the wrong place”. For a recent operation her doctor was able to take many scans of Sutton's heart and print out a model. “Kami's heart is truly one-of-a-kind,”Dr. Stephan Seslar, a heart disease specialist said. “Operating on her without understanding the structure of her heart better could be very dangerous.”

A New Skull

    A U.K. man was able to have part of his skull rebuilt thanks toa 3-D printer. Stephen Power broke his cheek bones in a crash. To help Powerh is doctors instead created 3-D bones all carefully printed in the shape of his face. “This is really the first time we've taken it to this stage, where everything has been planned and modeled in advance — and worked sweetly,”said Adrian Sugar, a doctor.

阅读下列短文：从每题所给的 A、B、C、D 四个选项中，选出最佳选项，将正确的选项涂在答题卡上。

Is there link between humans and climate change or not? This question was first studied in the early 1900s. Since then,many scientists have thought that our actions do make a difference. In 1997,the Kyoto Protocol explained our role in the Earth's changing atmosphere and set international limits for gas emissions(排放) from 2008to 2012. Some countries have decided to continue these reductions until 2020. More recently, the Paris Agreement, stuck by nearly 200 countries, also aims tolimit global warming. But just now how much warmer it will get depends on how deeply countries cut carbon emissions.

    Welcome to your future life!

    You get up in the morning and look into the mirror. Your face is firm and young-looking. In 2035, medical technology is better than ever. Many people your age could live to be 150, so at 40, you're not old at all. And your parents just had an anti-aging(抗衰老的) treatment. Now, all three of you look the same age !

    You say to your shirt, “Turn red.” It changes from blue to red. In 2035, “smart clothes” contain particles(粒子) much smaller than the cells in your body. The particles can be programmed to change your clothes' color or pattern.

    You walk into the kitchen. You pick up the milk, but a voice says, “You shouldn't drink that!” Your fridge has read the chip (芯片) that contains information about the milk , and it knows the milk is old . In 2035, every article of food in the grocery store has such a chip.

    It's time to go to work. In 2035, cars drive themselves. Just tell your “smart car” where to go. On the way, you can call a friend using your jacket sleeve(袖子). Such “smart technology” is all around you.

    So will all these things come true? “For new technology to succeed,” says scientist Andrew Zolli , “it has to be so much better that it replaces what we have already.” The Internet is one example --what will be the next?

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

阅读理解

Dear Valued Customer,

     We regret that your baggage was not available to claim after your recent flight. Everything possible will be done to locate your property and return it to you promptly(迅速地).

     For information regarding your delayed baggage, contact the United Airlines Baggage Resolution Center at its 24 hour, seven days a week

Number:

1-800-335-BAGS

281-821-3536 (Local Houston Number)

Or visit site: http://www.united.com/for/bagtracing

      As soon as you file your Delayed Baggage Report, United Airlines will begin to trace for your baggage system wide. Our Baggage Resolution staff will make every effort to call you once a day to keep you updated on our progress.

      So that we can quickly access your records, please refer to the File Reference Number on this receipt when corresponding or calling.

Keep this receipt with your claim check and E-Ticket receipt until your baggage is returned to you.

      In most circumstances, United Airlines will deliver your baggage when it is located. Delivery times vary depending on location.

     If your baggage has not been returned to you within the initial five-day tracing period, please download a claim form at http://www.united.com/web/en-US/content/travel/baggage/delayed.aspx and return it to us with the required documentation included.

http://csmcbagapp.nam.coair.com/bmswtweb/Does/FileCreatedPrintPC.aspx?ref_num=144…

_______________________________________________________________________________

DELAYED BAGGAGE REPORT                      FILE REFERENCE: ALBUA25876

_______________________________________________________________________________

Name:          JOHN JACKSON                   Contact Number: 802-247-9999

Delivery Address: 66 MOONBROOK DR

BRANDON                        Email: minminvt@yahoo.com

VERMONT USA 05745                

_______________________________________________________________________________

Bag Tag     Description

0037387643  Soft-Side Upright suitcase

0037387657  Non-Zippered, hard side horizontal suitcase

    The search engine Google celebrated on Thursday the 110th birthday of the first Native American woman engineer. Google honored Mary Ross with a special Google Doodle on its homepage.

    Ross was born on August 9, 1908, in the state of Oklahoma. She was the great-granddaughter of John Ross, the longest—serving chief of the Cherokee Nation. Her work is considered important to the early stages of the age of space travel.

    Ross showed special abilities in math and science from an early age. As a student, she developed an interest in aviation, or the practice of flying aircraft. She went on to earn a master's degree in mathematics from Colorado State Teachers College, now called the University of Northern Colorado.

    During World War II, Ross began working for the Lockheed Aircraft Corporation as a mathematician. She earned a special certification in the field from the University of California in1949.Ross was later chosen to join Lockheed's top—secret Skunk Works team that worked on aircraft designs. The name refers to a group that is permitted to work independently on advanced projects. She was the only female engineer among the team's 40 members.

    Early on, she researched defense systems. By the late 1950s, her work centered on satellites and a series of space rockets called Agenda. The rockets were extremely important in the 1960s during the Apollo moon program.

    Ross also helped develop early design ideas for space travel between planets, including flyby space flights to study Venus and Mars. Ross retired from Lockheed in 1973.But she continued to give talks at high schools and colleges to encourage more women and Native Americans to study engineering. She died in 2008, a few months before her 100th birthday.

    Many celebrated Ross' life on social media. Twitter user Aaron Perez, for example, wrote: “Mary Ross was an engineer who pioneered in the field of satellites. I never would have known if it wasn't for the doodle. Women engineers deserve more recognition.”

    “At almost any given age, most of us are getting better at some things and worse at others, ”Joshua Hartshorne, an MIT cognitive(认知的)science researcher and the lead author of a study looking at how intelligence changes as we age, told Business Insider. His team quizzed thousands of people aged 10—90 on their ability to do things like remembering lists of words, recognizing faces, learning names, and doing math. Their results suggest that no matter your age, there's almost always a new peak on the horizon.

    The human brain has a remarkable capacity to recognize and identify faces, and scientists are just beginning to learn why. On average, we know that our ability to learn and remember new faces appears to peak shortly after our 30th birthday.

Having trouble focusing? The study suggests that our ability to maintain attention improves with age, reaching its peak around age 43.While younger adults may excel in the speed and flexibility of information processing, adults approaching their mid-years may have the greatest capacity to remain focused.

    Dating is tough. One of the reasons could be that we're generally bad at reading other people's emotions until we reach our late 40s.That's according to one component of Hartshorne's study, which involved showing thousands of people images of faces cropped tightly around the eye area. Participants were asked to describe the emotion the person in the photo was feeling. Performance peaked for people aged around 48.

    Many people believe that their math skills decline after they leave school and stop practicing arithmetic. But the next time you try to split up a check, keep this in mind: your ability to do basic subtraction and division doesn't reach its apex until your 50th birthday.

    Ever wonder why you always lose at Scrabble? Good news: Your best days may be ahead. According to people's scores on multiple—choice vocabulary tests, most of us don't reach our peak wordsmithing abilities until we're in our late 60s or early 70s.