More primary care doctors in a community (社区) appear to lead to improved life expectancy for people living there，though a lack of such physicians across U.S. could be a cause of concern for overall population health in years to come.

For the study, researchers looked at physician counts per 100,000 people in a range covering 2005 to 2015 in the U. S.，along with life expectancy and specific causes of death. They found that an increase of 10 primary care physicians per 100,000 population was associated with a 51. 5-day increase in life expectancy, while an increase of 10 specialty physicians per 100, 000 population increased life expectancy by 19. 2 days. An increase in primary care physicians also was associated with reductions of many deaths including heart diseases and cancers.

Along with those findings, though, the study said many communities did not have primary care physicians in 2015，with the decline in supply more prominent in rural areas than their urban areas. Many believe that a well-functioning health care system requires a solid foundation of primary care, however, payment difference between primary care and technical specialties continue to dispirit the U. S. primary care physician workforce.

“Higher pay and lifestyle preferences lead most students to choose non-primary care fields, even when their hearts say primary care,” the study said. “We must turn this trend around with practical changes in physician payment policy; no amount of superb primary care training or creative practice reform will prevent further declines in primary care physician, which will lead to worsening health for the United States. ”

The study’s researchers conclude that future research should focus on the “quality and cover of primary care，types of primary care physician training and service offerings, and effective access rather than just supply”.

   What will man be like in the future — in 5,000 or even 50,000 years from now? We can only make _____, of course, but we can be sure that he will be different from what he is today, for man is slowly _____ all the time.

Let us take an obvious _____. Man, even five hundred years ago, was shorter than he is today. Now, on average, man is about three inches taller. Five hundred years is a relatively short period of time, so we may _____ that man will continue to grow taller. Again, in the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain’s capacity (能力). As time goes on, _____, we shall have to use our brains more and more, and _____ we shall need larger ones! This is likely to _____ a physical change to the head, and in particular the forehead, which will grow larger.

Nowadays our eyes are in _____ use. In fact, we use them so much that very often they become _____ and we have to wear a pair of glasses. But over a very long period of time it is likely that man’s eyes will grow stronger.

On the other hand, we have a (n) ______ to make less use of our arms and legs. They, ______, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive ______ they are used a great deal in modern life.

Another we are ______ about is our hair. This will ______ from the body altogether in the course of time because it does not ______ a useful purpose any longer. In the future, then, both sexes are likely to be bald (秃顶的).

Perhaps all this gives the ______ that future man will not be a very ______ creature to look at! This may well he true. All the same, ______ all these changes, future man will still have a lot in ______ with us. He will still be a human being, with thoughts and ______ similar to our own.

   Leon，12，was born without fingers on his left hand. That didn't stop him from being able to do many tasks. But Leon could not grasp more than one object at a time. So Leon's father，Paul，created a prosthesis（义肢），using a3-D printer. Now Leon has fingers that can open and close. "It was a do-it-yourself，father and son adventure，" says Paul.

When Leon was a baby，his doctor advised his parents not to give him a prosthetic hand until he was in his early teens. "The doctor said Leon should first learn to get full use of the hand he was born with，"says Paul. As Leon got older，his father considered buying a prosthetic hand，which can cost as much as $30，000. Then Paul found a more affordable solution.

One day，Paul discovered a video on the Internet about Robohand，a prosthesis created by a 3--D printer. He downloaded the free instructions and called Robohand's creators for advice. They told him all he needed was a 3-D printer-which costs around $2，000 and some materials.

Luckily，Leon's school had recently bought a 3-D printer and it offered to help Paul build the hand for Leon. "We used a soccer shin pad（护胫），cardboard，and tape. They cost about $10，"says Paul.

With his new hand，Leon can do things better. "I can help my mom more，because now I can carry two grocery bags，"he says.

Leon's father has already built several hands for Leon. Leon helps design each one. He says there's one thing in particular that he wants to do with a future prosthesis. "The goal，"he tells the reporter from the local evening paper，"is to be able to tie my shoelaces（鞋带）".

   Living near the ocean is good for health, but not a luxury all can afford. But those who can, certainly gain a lot of health benefits over common inland folks.

● 【小题1】 As we know, because people living near a coast get enough time to swim in the seawater, they naturally tend to be stronger. Physicians have been recommending visits to coasts that specialize in providing seawater cleansing treatment, which improves the immune system.

● Living near the ocean promotes physical activity. The seashore encourages outdoor activities like jogging on the sand, beach volleyball, scuba-diving, surfing, etc .【小题2】

● Fresh air helps get sleep. Fresh ocean air is composed of negatively charged ions that enable us to consume oxygen, adding to good health. These ions also aid in balancing the serotonin (血清素) level, which helps in feeling more relaxed. 【小题3】 Little by little, this leads to better sleep after spending a large amount of time near the ocean.

● Living near the ocean can help you absorb more vitamin

   New Year’s resolutions（决心）often fail, but now a new study may just provide motivation for you to stick to them. Scientists found that meeting goals — such as giving up drinking or smoking — can slash your risk of cancer.

The large-scale study — of half a million Britons — looked at the effects of quitting tobacco，limiting alcohol intake, maintaining a low body mass index (BMI), exercising regularly and eating a healthy diet. Each individual behaviour was found to bring a decrease in the chance of getting cancer of about eight per cent. But if people carried out all together the overall risk reduction was about a third — and likely a greater cut in deaths from the disease.

The researchers from Cardiff University examined data from 343,150 people from the UK Biobank to identify the five healthy behaviours and compare them to the risk of cancer. The subjects were aged 40 to 69 and 14,285 were diagnosed （诊断）with the disease during an average follow-up of just over five years. The team found that adopting（采用）all the studied healthy behaviours brought a 25 and 35 percent reduction in bowel and breast cancer respectively — two of the most common forms of the disease.

The team said the findings may not sound surprising — but they serve as a reminder of the importance behind turning resolutions into permanent lifestyle choices.

Professor Elwood, the lead researcher，said the real problem for people adopting resolutions was translating the unclear idea of lifestyle choices being “good” into useful evidence — which was what this study provided. “A healthy lifestyle has many additional benefits to cancer reduction — it costs nothing, has no undesirable side effects…and is better than any pill.”