Monkeysseemtohaveawaywithnumbers.Ateamofresearcherstrai...
问题详情:
Monkeys seem to have a way with numbers.
A team of researchers trained three Rhesus monkeys to associate 26 clearly different symbols consisting of numbers and selective letters with 0-25 drops of water or juice as a reward. The researchers then tested how the monkeys combined—or added—the symbols to get the reward.
Here's how Harvard Medical School scientist Margaret Livingstone, who led the team, described the experiment: In their cages the monkeys were provided with touch screens. On one part of the screen, a symbol would appear, and on the other side two symbols inside a circle were shown. For example, the number 7 would flash on one side of the screen and the other end would have 9 and 8. If the monkeys touched the left side of the screen they would be rewarded with seven drops of water or juice; if they went for the circle, they would be rewarded with the sum of the numbers—17 in this example.
After running hundreds of tests, the researchers noted that the monkeys would go for the higher values more than half the time, indicating that they were performing a calculation, not just memorizing the value of each combination.
When the team examined the results of the experiment more closely, they noticed that the monkeys tended to underestimate(低估)a sum compared with a single symbol when the two were close in value—sometimes choosing, for example, a 13 over the sum of 8 and 6. The underestimation was systematic: When adding two numbers, the monkeys always paid attention to the larger of the two, and then added only a fraction(小部分)of the smaller number to it.
"This indicates that there is a certain way quantity is represented in their brains, "Dr. Livingstone says. “But in this experiment what they're doing is paying more attention to the big number than the little one.”
32. What did the researchers do to the monkeys before testing them?
A. They fed them. B. They named them.
C. They trained them. D. They measured them.
33. How did the monkeys get their reward in the experiment?
A. By drawing a circle. B. By touching a screen.
C. By watching videos. D. By mixing two drinks.
34. What did Livingstone's team find about the monkeys?
A. They could perform basic addition. B. They could understand simple words.
C. They could memorize numbers easily. D. They could hold their attention for long.
35. In which section of a newspaper may this text appear?
A. Entertainment. B. Health. C. Education. D. Science.
【回答】
32. C 33. B 34. A 35. D
知识点:科普环保类阅读
题型:阅读理解
-
(2010·福建高考)入海河流三角洲的土地利用类型受河流淡水和海洋咸水的共同影响。某三角洲面积增长较快,该三...
问题详情: (2010·福建高考)入海河流三角洲的土地利用类型受河流淡水和海洋咸水的共同影响。某三角洲面积增长较快,该三角洲地区2007年土地利用类型的构成如下表所示。读表,完成11~12题。旱地林草地盐荒地滩涂其它合计占总面积比例(%)171232182110011.该三角洲地...
-
_____________,_____________。万里悲秋常作客,百年多病独登台。杜甫《登高》
问题详情:_____________,_____________。万里悲秋常作客,百年多病独登台。杜甫《登高》【回答】无边落木萧萧下,不尽长*滚滚来。知识点:其他题型:填空题...
-
某有机物结构简式为,下列关于该有机物的说法中不正确的是( )A.遇FeCl3溶液显紫*B.与足量的*氧化*溶...
问题详情:某有机物结构简式为,下列关于该有机物的说法中不正确的是()A.遇FeCl3溶液显紫*B.与足量的*氧化*溶液在一定条件下反应,最多消耗NaOH3molC.能发生缩聚反应和加聚反应D.1mol该有机物与溴发生加成反应,最多消耗1molBr2【回答】解析A项,有机物分子中存在*羟基,所以...
-
下列句子中没有运用拟人修辞手法的一项是( ) A.我们的春雁每天都要去玉米地作一次旅行,但绝不是偷偷摸摸进行的...
问题详情:下列句子中没有运用拟人修辞手法的一项是( ) A.我们的春雁每天都要去玉米地作一次旅行,但绝不是偷偷摸摸进行的。B.每次出发前,都有一场高声而有趣的辩论,而每次返回之前的争论则更为响亮。C.3月的大雁则不同。尽管它们在冬天的大部分时间里都可能受到*击,但...
相关文章
- 单项选择。WheneverMaryreadsaninterestingstory,shecan'tkeepit...
- 完成下面短文,每空一词。YesterdayIwenttotheparkforsomeexercise.AsIw...
- Itseemslikeeverydaythere’ssomenewresearchaboutwhetherou...
- 阅读理解A:Whoseglovesarethese?Aretheyyours,Mike?B:No.They’r...
- Campmemorieslastforever!Wemakesuretheyareunforgettable!...
- 单项选择。WheneverMaryreadsaninterestingstory,shecan'tkeepit...
- 单项选择。WheneverMaryreadsaninterestingstory,shecan'tkeepit...
- Nextyearmarksthe150thanniversaryofwhenlargenumbersofChi...
- Formorethantwentyyearsscientistshavebeenseekingtounders...
- 单项选择。WheneverMaryreadsaninterestingstory,shecan'tkeepit...