C
A new survey finds that more than eighty percent of Internet users in the United States search for health information online．The survey found that searching online is one of the leading ways that people look for a second opinion though doctors are still the main source of health information．
Forty-four percent of people are actually looking for doctors or other providers when they search for health information online．Another finding of the survey: Two-thirds of Internet users look online for information about a specific disease or medical condition．
The Internet has also become an important source of emotional support for people with health problems．Susannah Fox says one in five Internet users has gone online to find other people who have the same condition．It was more popular among people with more serious health issues—one in four people living with chronic diseases （慢性病）．And it was basically off the charts with people living with rare disease．They are so eager to find other people online who share their health concerns．
A disease is considered rare if it affects fewer than two hundred thousand people worldwide．The rise of social networking has made it easier for people with rare diseases to connect with each other and feel less alone．Social networking is also changing the way some doctors and patients communicate with each other．Dr．Jeff Livingston operates a medical center for women in Irving, Texas．His office uses password-protected software to share information with patients．
“We provide the patient full access to their medical care．Anything I can see, the patient can see．All of their notes, all of their doctor visits are right there．All of their lab work is right there．” Dr．Livingston says the software has increased efficiency, reduced costs and improved relations with patients．

64．From the first paragraph, we can know _________．
 A．most online health information is reliable
 B．more people now turn to the Internet for medical advice
 C．people shouldn’t rely on the Internet for medical advice
 D．doctors are no longer the patients’ first choice
65．The underlined words “off the charts” in Paragraph 3 mean _________．
 A．very popular B．not accessible C．far away from  D．not attractive
66．By using social networking, patients with rare diseases can _________．
 A．find effective cures       B．get emotional comfort
C．ask for financial support    D．consult doctors anytime
67．Which of the following is NOT true for Dr．Livingston’s software?
 A．It cuts down medical expenses． B．It decreases the time spent on medical care．
 C．It takes doctors closer to their patients． D．It gives patients a medical test online．
D
Pollution is reducing the fragrance of plants and thus preventing bees from pollinating them—endangering one of the most essential cycles of nature, a new study suggests.
The potentially hugely significant research, funded by US National Science Foundation, has found that gases mainly formed from the emissions of car exhaust prevent flowers from attracting bees and other insects to pollinate them. And the scientists who have conducted the study fear that insects’ abilities to drive away enemies and attract mates may also be disturbed.
Professor Jose Fuentes, who led the study, said, “Scent molecules(分子) produced by flowers in a less polluted environment could travel for roughly 1,000 to 1,200 meters. But today they may travel only 200 to 300 meters. This makes it increasingly difficult for bees and other insects to locate the flowers.”
The researchers, who worked on the molecules of snapdragons(金鱼草),found that the molecules are volatile(易挥发的) and quickly bond with pollutants, mainly formed from vehicle emissions. This chemically changes the molecules so that they no longer smell like flowers. A harmful cycle is therefore set up where insects struggle to get enough food and the plants do not get pollinated enough to multiply.
Already bees, which pollinate most of the world’s crops, reduce in such a great decline that has never been known before in Britain and across much of the globe. At least a quarter of America’s 2.5 million honey bee colonies have been mysteriously wiped out by colony collapse disorder(CCD),where hives are found suddenly deserted.
The crisis has now spread to Europe. Politicians insist that CCD has not yet been found in Britain, but considering the present number of bees, the agriculture minister Lord Rooker has sent the warning, “The honey bee population could be wiped out in 10 years.”
Although the researchers are not certain whether this is the real cause of CCD, they say that pollution is making life more difficult for bees and other insects in many ways.
68. In what way does pollution prevent flowers from attracting bees?
  A. By shortening the distance traveled by the scent molecules of flowers.  
B. By disturbing the bees’ ability to attract mates.
  C. By weakening the bees’ ability to fight against enemies.
  D. By stopping flowers from giving off fragrance.
69. What harm does the decreasing number of bees do to human beings?
  A. It will cause humans not to get enough honey.
  B. It will reduce the food supplies for the world.
  C. Humans will have to depend on other insects to pollinate plants.
  D. Humans will find it hard to deal with the deserted bee hives.
70. From the passage we can know that                 .
  A. Europe is affected greatly by CCD
  B.CCD has destroyed most of the honey bee colonies in Europe
  C. no honey bees will be found all over the world in the near future
  D. European officials have paid much attention to CCD
71. What would be the best title for the passage?
  A. Traffic Pollution Puts Bees in Danger          B. Traffic Pollution is to Blame for CCD
C. Pollution Makes Flowers Reduce Their Scent    D. Pollution Causes the Decrease in Flowers
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