Cloze Recent research from animal behaviorists suggests that "as the crow flies" should no longer be taken to mean "the shortest distance between two points." Zoologists at Oxford University, 1 conducted an eighteen-month 2 of homing pigeons, have concluded that under some circumstances, pigeons follow 3 visual landmarks to find their way home 4 than taking the shortest, most direct route. 5 for their ability to navigate long distances, homing pigeons use the 6 of the sun and stars, their inbuilt compasses, and perhaps also their sense of smell to direct their flight over long 7 or on a journey for the first time. 8 , different factors appear to affect a pigeon's navigation 9 it is released close to its 10 . Animal behaviorists reached this 11 after attaching small global positioning devices to the backs of pigeons and releasing them a few miles from their home. These devices enabled the scientists to 12 the precise location of each pigeon every second of 13 flight. Each pigeon was tracked for approximately twenty flights from the 14 point. For the first several flights, each bird's path 15 significantly from the paths it had taken 16 . Subsequently, 17 , the bird would tend to follow the same path, 18 after flight, even though that path was not always the most direct route home. The scientists concluded that pigeons use a 19 of familiar visual landmarks to find their way when they are near their home rather than relying primarily on compass navigation. Major highways are one 20 landmark. Almost comically, some of the pigeons followed the path of a major highway they could see below them, turning where the road turned, and even following the circular path of the exit ramps.
1.
A.which
B.then
C.who
D.had
A B C D
C
[解析] 本题考查定语从句,后面的“conducted an eighteen-month”是对前面Zoologists的修饰,先行词应该是与人相对应的,因此应为who。由此可知正确答案为C选项。
[解析] 对本题横线处的填写需要结合整篇文章的意思,联系文章填空19“The scientists concluded that pigeons use a ______ of familiar visual landmarks”及全文意思可知,此处想要表达的是鸽子能够通过熟悉的地标来找到回家的路,因此本题横线处应填familiar,答案为B选项。
Most people who travel long distances complain of jetlag (飞行时差反应). Jetlag makes business travelers less productive and more prone 21 making mistakes. It is actually caused by 22 of your "body clock"—a small cluster of brain cells that controls the timing of biological 23 . The body clock is designed for a 24 rhythm of daylight and darkness, so that it is thrown out of balance when it 25 daylight and darkness at the wrong times in a new time zone. The 26 of jetlag often persist for days 27 the internal body clock slowly adjusts to the new time zone. Now a new anti-jetlag system is 28 that is based on proven 29 pioneering scientific research. Dr. Martin Moore-Ede has 30 a practical strategy to adjust the body clock much sooner to the new time zone 31 controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates 32 of the discomfort of jetlag. A successful time zone shift depends on knowing the exact time to either 33 or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule 34 light exposure depends a great deal on 35 travel plans. Data on a specific flight itinerary (旅行路线) and the individual's sleep 36 are used to produce a Trip Guide with 37 on exactly when to be exposed to bright light. When the Trip Guide calls 38 bright light, you should spend time outdoors if possible. If it is dark outside, or the weather is bad, 39 you are on an aeroplane, you can use a special light device to provide the necessary light 40 for a range of activities such as reading, watching TV or working.
2009 was the worst year for the record labels in a decade 41 was 2008, and before that 2007 and 2006. In fact, industry revenues have been 42 for the past 10 years. Digital sales are growing, but not as fast as traditional sales are falling. Maybe that's because illegal downloads are so easy. People have been 43 intellectual property for centuries, but it used to be a time-consuming way to generate markedly 44 copies. These days, high-quality copies are 45 . According to the Pew Interact project, people use file-sharing software more often than they do iTunes and other legal shops. I'd like to believe, as many of my friends seem to, that this practice won't do much harm. But even as I've heard over the past decade that things weren't 46 bad, that the music industry was moving to a new, better business model, each year's numbers have been worse. Maybe it's time to admit that we may never find a way to 47 consumers who want free entertainment with creators who want to get paid. 48 on this problem, the computational neuroscientist Anders Sandberg recently noted that although we have strong instinctive feelings about ownership, intellectual property doesn't always 49 that framework. The harm done by individual acts of piracy is too small and too abstract. "The nature of intellectual property," he wrote, "makes it hard to maintain the social and empathic 50 that keep(s) us from taking each other's things."
[解析] 空格所在句子大意为:也许是时候承认,我们永远也无法找到一种方式,把需要免费娱乐的消费者和希望得到报酬的创作者协调起来。A项satisfy“满足,使满意,说服,使相信”;B项help“帮助,助长,接济”;C项reconcile“使和解,使和谐,使顺从”;D项equate“使相等”;所选词语构成“______ sb. with sb.”的结构,只有C项正确。