Increasingly, Americans are becoming their own doctors by going to diagnose their symptoms, order home health tests or medical devices, or even self-treat their illnesses with drugs from Internet pharmacies(药店).Some avoid doctors because of the high cost of medical care, especially{#blank#}1{#/blank#} they lack health insurance. Or they may stay away because they find it{#blank#}2{#/blank#}(embarrass) to discuss their weight, smoking, alcohol consumption or couch potato habits. Patients may also fear what they might learn about their health, or they distrust physicians because of negative {#blank#}3{#/blank#} (experience) in the past. But{#blank#}4{#/blank#}(play) doctor can also be a deadly game.

Every day, more than six million Americans turn to the Internet{#blank#}5{#/blank#}medical answers— and most of them aren't nearly sceptical enough of what they find. A 2002 survey by the Pew Internet &American Life Project found that 72 percent of those{#blank#}6{#/blank#}(survey) believe all or most of what they read on health websites. They shouldn't look up “headache” and the chances of finding {#blank#}7{#/blank#}(rely) and complete information, free from a motivation for commercial gain,{#blank#}8{#/blank#} (be) only one in ten, reports an April 2005 Brown Medical School study. Of the 169 websites the researchers rated, only 16 scored as “high quality”. Recent studies found faulty facts about all sorts of other disorders, causing one research team to warn that a large amount of incomplete, inaccurate and even dangerous{#blank#}9{#/blank#} (inform) exists on the Internet.

    The problem is most people don't know the safe way to surf the Web. “They use a search engine like Google, get 18 trillion choices and start clicking. But that's risky, because almost anybody can put up a site that looks authoritative ( 权威的), so it's hard to know if what you're reading is {#blank#}10{#/blank#}(reason) or not,” says Dr. Sarah Bass from the National Cancer Institute.

    Senior citizens are the first to come to our mind when you think of hearing loss, but in a recent report, hearing professionals worry teenagers will soon outnumber aging adults {#blank#}1{#/blank#} it comes to living with hearing loss.

    The rise in popularity of personal audio devices from iPods to smart phones has had dangerous effect on the ears of those who use them most, teenagers! A research {#blank#}2{#/blank#} (conduct) by the World Health Organization finds that nearly 50% of teens {#blank#}3{#/blank#} (fall) into the habit of exposing themselves to unsafe levels of sound so far.

    A sound is considered unsafe when it goes beyond 85 decibels (分贝). At that level, it takes just 8 hours of listening over your lifetime to cause damage. The louder the sound is, the {#blank#}4{#/blank#} (little) time it takes to cause damage. Because hearing loss is {#blank#}5{#/blank#} (typical) considered a health problem for the elderly, it is difficult to convince already stubborn teenagers that they really are doing damage {#blank#}6{#/blank#} their ears.

    Young adults {#blank#}7{#/blank#} have been exposed to loud noise over a period of time may have some hearing loss symptoms. Their {#blank#}8{#/blank#} (able) to learn is compromised, and they may have difficulty developing social skills.

    In an effort to help teens better protect their hearing, we suggest {#blank#}9{#/blank#} (set) volume limits on personal audio devices. {#blank#}10{#/blank#} is also good to limit the amount of time exposed to noise and to take listening breaks to give the ears a rest.

    Almost all the ice covering the Bering Sea has melted(融化), scientists have confirmed, {#blank#}1{#/blank#} (throw) communities living around {#blank#}2{#/blank#} (it) shores into disorder. The region's ice cover {#blank#}3{#/blank#} (normal) lasts for at least another month, and this year it has disappeared earlier than any other year except 2017.

    Living in {#blank#}4{#/blank#} northern Pacific Ocean between Alaska and Russia, the Bering Sea is experiencing the climate change and has drawn attention this year for record-breaking levels of winter melting. In February, rising Arctic temperatures {#blank#}5{#/blank#} (lead) to around half the region's disappearing in the space of two weeks.

    A report {#blank#}6{#/blank#} (send) by the International Arctic Research Centre at the University of Alaska Fairbanks has outlined the real-world effects of these surprising environmental {#blank#}7{#/blank#} (change) on the many communities {#blank#}8{#/blank#} live in the Bering Sea region.

    In their report, the International Arctic Research Centre scientists wrote that while not every year will be as bad as this one, ice {#blank#}9{#/blank#} (form) is likely to remain low if the Bering Sea's waters remain warm. They also warn that communities will need to "prepare for more winters {#blank#}10{#/blank#} low sea ice and stormy conditions".

    There is one all-important law of human conduct. If we obey that law, we shall almost never get into trouble. In fact, that law, if {#blank#}1{#/blank#} (obey), will bring us countless friends and constant happiness. But the very instant we break the law, we shall get into {#blank#}2{#/blank#} (end) trouble. The law is this: Always make others feel important. John Dewey, an American psychologist, once {#blank#}3{#/blank#} (say) that gaining others' respect is {#blank#}4{#/blank#} deepest urge in human nature. According to psychologist, William James, the ruling principle in human nature is the desire {#blank#}5{#/blank#} (appreciate). It is desires and urges like these {#blank#}6{#/blank#} distinguish us from animals. People have thought about the rules of human relationships for thousands of years before {#blank#}7{#/blank#} (discover) one rule—probably the most important rule in the world: Do to others as you would have them do to you.

    You want the approval of those with {#blank#}8{#/blank#} you come in contact. You want the recognition of your true worth. You want to have the {#blank#}9{#/blank#} (feel) that you are important in your little world. So let's obey the Golden Rule, recognize others' importance and recognize it {#blank#}10{#/blank#} (honest). When? Where? The answer is: all the time, everywhere.