单选题{{B}}Passage Three{{/B}} Every Thursday evening, I counsel a group of teenagers with serious substance abuse problems. None of the youngsters elected to see me. Typically, they were caught using drugs, or worse, by their parents or a police officer and were then referred to my clinic. To be sure, all the usual intoxicants--alcohol, marijuana and cocaine-are involved. But a new type of addiction has crept into the mix, controlled prescription drugs, including painkillers. This is hardly unique to my clinic. Several studies report that since 1992, the number of 12-to 17-year-olds abusing controlled prescription drugs has tripled. One of my patients, Mary, illustrates this trend all too well. Mary at 16 is a "garbage head", meaning that she will ingest anything she thinks will give her a high. Last December, she was taken to the hospital for an overdose of alcohol, and ketamine, a chemical cousin of angel dust that doctors sometimes use to anesthetize patients and that, more commonly, veterinarians use to sedate large animals. So where does this physically energetic teenager obtain her pills? Weeks earlier, she had an operation, a minor though uncomfortable procedure by any standards. The surgeon wrote a prescription for 80 tablets. Mary spent the next week in the addiction of the drug until her mother confiscated the last 20 tablets. At medical conferences, I hear colleagues fault parents who abuse and obtain these controlled substances but leave them easily accessible in their unlocked medicine chests where teenagers can help themselves. Other experts fault the Internet, where al-most anyone can obtain controlled prescription drugs from offshore pharmacies with a few clicks on a home computer. None of these targets come close to the real root of the problem. Many doctors are too quick to write prescriptions for these powerful drugs. The National Center for Addiction and Substance Abuse recently reported that 43.3 percent of all American doctors did not even ask patients about prescription drug abuse when taking histories; 33 percent did not regularly call or obtain records from a patient's previous doctor or from other physicians before writing such prescriptions; 47.1 percent said their patients pressured them into prescribing these drugs; and only 39.1 percent had had any training in recognizing prescription drug abuse and addiction. No one in pain--physical or psychic--should suffer. But the fact remains that we doctors still do the bulk of prescribing of the substances. The search for root causes of the epidemic with controlled substance abuse has to include doctors as active participants. A big part of the solution depends on reserving prescriptions for those who need, rather than de-sire, them.

单选题In the author's opinion, all the following are to blame for crime EXCEPT ______.

单选题Any time ______, any period of waiting is because you haven"t come and received the message.

单选题Some people want to make as much money as they can because they believe that money can bring them fame and ______. A.directory B.morality C.prestige D.monopoly

单选题The poor reception on your TV is probably due to outside A. intervention B. interruption C. interception D. interference

单选题What is NOT true according to the article?

单选题The sailor______ the little boy by telling him an interesting story.

单选题What"s your attitude ______ his criticism?

单选题Most studies focus on remarkably precise slivers of human emotions. One study at Allegheny University in Pennsylvania found that the tendency for a person to throw dishes or slam doors when he is angry is 40 percent heritable, ______ the likelihood a person will yell in anger is only 28 percent heritable. A. and B. that C. yet D. while

单选题The courage (we desire) and (praise) is not the courage to die (decently) but to live (manly).

单选题Whether the extension of consciousness is a "good thing" for human being is a question that ______ a wide solution.

单选题She had to______her dress because she had lost weight.

单选题In 1844, Charles Stun. a British soldier and colonial administrator, made an expedition ______ a supposed inland sea; his party penetrated more than 1000 miles northward, almost to the center of Australi

单选题Ice skates manufactured Uentirely/U of iron were first sold in the 1800's.

单选题Depending on your age and memory, it was a week of radically new or reassuringly old developments in the advertising industry. To Mark Zuckerberg, the boss of Facebook, a popular social-networking website, it was the former. Standing in front of about 250 mostly middle-aged advertising executives on November 6th, he announced that Facebook was offering them a new deal. "For the last hundred years media has been pushed out to people," he said, "but now marketers are going to be a part of the conversation. " Using his firm's new approach, he claimed, advertisers will be able to piggyback on the "social actions" of Facebook users, since "people influence people. " Mr. Zuckerberg's underlying idea is hardly new. But, says Randall Rothenberg, the boss of the Interactive Advertising Bureau, a trade association, the announcements this week by Facebook and its larger rival, My Space, which has a similar ad system, could amount to a big step forward in conversational marketing. If new technologies that are explicitly based on social interactions prove effective, he thinks, they might advance web advertising to its fourth phase. From the point of view of marketers, the existing types of online ads already represent breakthroughs. In search, they can now target consumers who express interest in a particular product or service by typing a keyword; they pay only when a consumer responds, by clicking on their ads. In display, they can track and measure how their ads are viewed and whether a consumer is paying attention better than they ever could with television ads. Yet now the holy grail of observing and even participating in consumers' conversations appears within reach. The first step for brands to socialize with consumers is to start profile pages on social networks and then accept "friend requests" from individuals. On My Space, brands have been doing this for a while. For instance, Warner Bros, a Hollywood studio, had a My Space page for "300", its film about Spartan warriors. It signed up some 200,000 friends, who watched trailers, talked the film up before its release, and counted down toward its DVD release. Facebook, from this week, also lets brands create their own pages. Coca-Cola, for instance, has a Sprite page and a "Sprite Sips" game that lets users play with a little animated character on their own pages. Facebook makes this a social act by automatically informing the player's friends, via tiny "news feed" alerts, of the fun in progress. Thus, at least in theory, a Sprite "experience" can travel through an entire group, just as Messrs Lazarsfeld and Katz once described in the offline world. In many cases, Facebook users can also treat brands' pages like those of other friends, by adding reviews, photos or comments, say. Each of these actions might again be communicated instantly to the news feeds of their clique. Obviously this is a double-edged sword, since they can just as easily criticize a brand as praise it. Facebook even plans to monitor and use actions beyond its own site to place them in a social context. If, for instance, a Facebook user makes a purchase at Fandango, a website that sells cinema tickets, this information again shows up on the news feeds of his friends on Facebook, who might decide to come along. If he buys a book or shirt on another site, then this implicit recommendation pops up too.

单选题It was ______ for him to wear a T-shirt at the reception. A. out of place B. out of question C. out of order D. out of practice

单选题These early clocks, operated by weights, were not particularly accurate, and it was not until the sixteenth century______

单选题The word "culmination" in the last paragraph means ______.