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【单选题】

Wild Bill Donovan would have loved the Intemet. The American spy who built the Office of Strategic Services in World War Ⅱ and later laid the roots for the (CIA) was fascinated with information. Donovan believed in using whatever tools came to hand in the "great " of espionage--spying as a "profession." These days the Net, which has already re-made such everyday pastimes as buying books and sending mail, is reshaping Donovan’’ s vocation as well. The latest revolution isn’’ t simply a matter of gentlemen reading other gentlemen’’ s e-mail. That kind of electronic spying has been going on for decades. In the past three or four years, the World Wide Web has given birth to a whole industry of point-and-click spying. The spooks call it "open- source intelce," and as the Net grows, it is becoming increasingly influential. In 1995 the CIA held a contest to see who could compile the most data about Bumndi. The winner, by a large margin, was a tiny Virginia company called Open Source Solutions, whose clear advantage was its y of the electronic world. Among the firms the biggest splash in this new world is Straifford, Inc., a private intelce-ysis firm based in Austin, Texas. Straifford makes money by selling the results of spying (covering nations from Chile to Russia) to corporations like energy-services firm McDermott International. Many of its predictions are available online at www. straitford, com. Straifford President George Friedman says he sees the online world as a kind of mutually reinforcing tool for both information collection and distribution, a spy’’ s dream. Last week his firm was busy vacuuming up data bits from the far comers of the world and predicting a cr in Ukraine. "As soon as that report runs, we’’ II suddenly get 500 new Intemet singe-ups from Ukraine," says Friedman, a former political science professor. "And we’’ 11 hear back from some of them." Open- source spying does have its risks, of course, since it can be difficult to tell good information from bad. That’’ s where Straifford earns its keep. Fridman relies on a lean staff of 20 in Austin.Several of his staff members have military- intelce backgrounds. He sees the firm’’s outsider status as the key to its success. Straifford’’ s briefs don’’t sound like the usual Washington back-and-forthing, whereby agencies avoid dramatic declarations on the chance they might be wrong. Straitford, says Friedman, takes pride in its independent voice. The phrase" the biggest splash"( line 1, paragraph 3)most probably means

A.
causing the biggest trouble.
B.
exerting the greatest effort.
C.
achieving the greatest success.
D.
enjoying the widest popularity.
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【多选题】下列关于数值平均数的说法中,错误的是()。

A.
数值平均数包括众数和中位数
B.
数值平均数包括算术平均数和几何平均数
C.
数值平均数既适用于品质数据,也适用于数值数据
D.
数值平均数是按数据的大小顺序或出现频数的多少确定的集中趋势的代表值
E.
数值平均数是根据部分数据计算出来的平均数