Increasingly, Americans are becoming their own doctors, by going online to diagnose their symptoms, order home health tests or medical devices, or even self-treat their illnesses with drugs from Internet pharmacies(藥店). Some avoid doctors because of the high cost of medical care, especially if they lack health insurance. Or they may stay because they find it embarrassing to discuss their weight, alcohol consumption or couch potato habits. Patients may also fear what they might learn about their health, or they distrust physicians because of negative experiences in the past. But playing doctor can also be a deadly game.  
Every day, more than six million Americans turn to the Internet for medical answers – most of them aren’t nearly skeptical enough of what they find. A 2002 survey by the Pew Internet & American Life Project found that 72 percent of those surveyed believe all or most of what they read on health websites. They shouldn’t. Look up “headache”, and the chances of finding reliable and complete information, free from a motivation for commercial gain, are 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 information 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(權威的), so it’d hard to know if what you’re reading is reasonable or not,” says Dr. Sarah Bass from the National Cancer Institute.
小題1:According to the text, an increasing number of American _____.
A．are suffering from mental disorders
B．turn to Internet pharmacies for help
C．like to play deadly games with doctors
D．are skeptical about surfing medical websites
小題2:Some Americans stay away from doctors because they _____.
A．find medical devices easy to operate
B．prefer to be diagnosed online by doctors
C．are afraid to face the truth of their health
D．are afraid to misuse their health insurance
小題3:According to the study of Brown Medical School, ______.
A．more than 6 million Americans distrust doctors
B．only 1/10 of medical websites aim to make a profit
C．about 1/10 of the websites surveyed are of high quality
D．72% of health websites offer incomplete and faulty facts
小題4:Which of the following is the author’s main argument?
A．It’s cheap to self-treat your own illness.
B．It’s embarrassing to discuss your bad habits.
C．It’s reasonable to put up a medical website.
D．It’s dangerous to be your own doctor.

小題1:B
小題2:C
小題3:C
小題4:D

小題1:本題考查理解細節(jié)信息的能力。由全文第一句 “Increasingly, Americans are becoming their own doctors, by going online to diagnose their symptoms, ….”可知正確答案為B。
小題2:本題考查語義替換的能力。由第一段Patients may also fear what they might learn about their health, or they distrust physicians because of negative experiences in the past. But playing doctor can also be a deadly game.可知正確答案為C。
小題3:本題考查根據(jù)文章有關細節(jié)進行推理判斷的能力。由第二段 “Of the 169 websites the researchers rated, only 16 scored as “high quality”.”可知，169家保健網(wǎng)站，只有16家安全可靠，即占1/10。故正確答案為C。
小題4:本題考查概括主旨大意的能力。最后一段指出作者的寫作目的和主要論點：健康網(wǎng)站參差不齊，直接找網(wǎng)站尋求健康信息不太可靠。
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