题目
题型：不详难度：来源：
A study of duetting in Peruvian warbling antbirds(蚁鸟) suggests that it might be a little of both, and that context is everything. Joseph A. Tobias and Nathalie Seddon of the University of Oxford show in Current Biology that sexual conflict can cause the female of a pair that normally cooperates to “jam” the male’s song by singing over it.
The researchers exposed antbird pairs to recorded songs of other antbirds and monitored the songs the pairs produced. In one experiment, they played the songs of an intruding pair. In this case, the resident pair “both are likely to lose their territory, so both should cooperate,” Dr. Tobias said. And they do. They produce a coordinated duet that in effect tells the intruders to keep away.
But when the researchers played the song of a single female, the pair behaved differently. “You’d expect the resident female to be highly motivated to defend her position in the partnership,” Dr. Tobias said. And that’s what occurs. The male sings its heart out, flirting(调情) with the single female, and the female of the pair does its best to interfere with the song by singing over it, apparently to make her mate less attractive to the other female.
“It’s clear that the male doesn’t like what she’s doing,” Dr. Tobias said. The behavior “breaks up what is otherwise a very cooperative situation into a more complicated signal,” he added.
It’s the first evidence of this kind of signal jamming among pairs, Dr. Tobias said.
And in that it leads the male to alter its song to avoid the female’s interfering notes, it shows that this kind of conflict could, over a long period, drive the evolution of coordinated song.
小题1:
What is the key factor of antbirds’ duet?
| A．Their cooperation. | B．Their conflict. |
| C．The context. | D．Their instinct. |
How did the researchers conduct the experiment?
| A．They put the antbird pairs back to nature and observe them. |
| B．They played different recorded songs of other antbirds. |
| C．They put an antbird to the other’s territory and observed. |
| D．They played the songs of an intruding pair. |
Why did the female bird sing according to Paragraph 4?
| A．It wanted to show its singing talent to the partner. |
| B．It aimed at keeping the partnership with the male. |
| C．It wanted to frighten the other females. |
| D．It wanted to make her mate more attractive. |
Which of the following is the topic of this passage?
| A．The special phenomenon about birds pairs. |
| B．The conflict of bird pairs. |
| C．The cooperation of bird pairs. |
| D．The piece of music for bird pairs. |
答案
小题1:C
小题1:B
小题1:B
小题1:D
解析
核心考点
试题【It takes two to duet (二重唱), and one question for scientists is how these coordin】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
In the early stages of skill or character development, imitation is helpful. When I first learned to cook, I used recipes (菜谱) and turned out some tasty dishes. But soon I grew bored. Why follow someone else’s way of cooking when I could create my own? Imitating role models is like using training wheels on a child’s bicycle; they help you get going, but once you find your own balance, you fly faster and farther without relying on them.
In daily life, imitation can hurt us if we subconsciously (下意识地) hold poor role models. If, as a child, you observed people whose lives were bad, you may have accepted their fear and pain as normal and gone on to follow what they did. If you do not make strong choices for yourself, you will get the results of the weak choices of others.
In the field of entertainment, our culture glorifies celebrities. Those stars look great on screen. But when they step off screen, their personal lives may be disastrous. If you are going to follow someone, focus on their talent, not their bad character or unacceptable behaviors.
Blessed is the person willing to act on their sundden desire to create somrthing unique.Think of the movies,books,teachers,and friends that have affected you most deeply.They touched you because their creations were motivated by inspiration,not desperation.The world is changed not by those who do what has been done brfore them,but by those who do what has been done inside them.Creative people have an endless resource of ideas.The problem a creator faces is not running out of material;it is what to do with the material knocking at the door of imagination.
Syudy your role models,accept the gifts they have given,and leave behind what does not server.Then you can say,”I stand on the shoulders of my ancestors”tragedies and tory ,and know that they are cheering on.
小题1:Imitation proves useful when you .
| A．know you are unique |
| B．lose the bslance of life |
| C．begin to learn something new |
| D．get tired of routine practice |
| A．forget daily fear and pain |
| B．choose the right example |
| C．ask others for decisions |
| D．stay away from stars |
| A．desperate to intruence others with their knowledge |
| B．ready to turn their original ideas into reality |
| C．eager to discover what their ancestors did |
| D．willing to accept others’ideas |
| A．the lack of strong motivation |
| B．the absence of practical ideas |
| C．how to search for more materials |
| D．how to use imagination creatively |
| A．To highlight the importance of creatively. |
| B．To criticize the characters of role models. |
| C．To compare imitation with creation. |
| D．To explain the meaning of success. |
| A. introduction B. company C. accidentally D. against AB. sped AC. apparent AD. between BC. institutional BD. context CD. influenced |
and storage capacity increasing. It was within the computer age that the term “information society” began to be widely used to describe the __53__ within which we now live. The communications revolution has __54__ both work and leisure and how we think and feel both about place and time, but there have been controversial views about its economic, political, social and cultural implications. “Benefits” have been weighed __55__ “harmful” outcomes. And generalizations have proved difficult.The first thing that you will realize about speed dating is that it makes you __69__. Unlike a bar, where you might get a whole evening to __70__ check a potential partner out and to see what they’ve got, when it comes to __71__, you know that you only have a certain amount of time to put your best foot forward there. You’ll find the other participants are __72__ of this and will put their best foot forward.
An 8-minute speed dating will also give you a chance to see how someone __73__ under pressure. You may already know a little more about their __74__ if you find someone who can’t seem to make eye-contact. The best advice is to make eye contact, be open and direct. You’ll find that the __75__ time can make for some excellent opportunities to really shine, and there’s nothing like a deadline to make you more __76__! An important detail to keep in mind is that you will be __77__ to a dozen or more singles in a short time. Those who feel that there is an advantage in larger numbers will surely find this __78__.
When you are looking for __79__, you may not want to do the long search, so think about speed dating and see what you can do to make sure that it works for you. __80__, give this exciting opportunity a try!
小题1:
A. lovers B. couples C youths D. singles
小题2:
| A．learn | B．have | C．explore | D．develop |
| A．equally | B．hardly | C．definitely | D．eventually |
| A．chase | B．hurry | C．focus | D．cheer |
| A．constantly | B．frequently | C．occasionally | D．unexpectedly |
| A．making friends | B．speed dating | C．family planning | D．home improving |
| A．sick | B．fond | C．aware | D．confident |
| A．acts | B．talks | C．lives | D．loves |
| A．interest | B．background | C．intention | D．personality |
| A．spare | B．limited | C．appointed | D．luxurious |
| A．creative | B．passive | C．negative | D．objective |
| A．introduced | B．devoted | C．mentioned | D．used |
| A．demanding | B．surprising | C．convincing | D．appealing |
| A．fun | B．love | C．friendship | D．adventure |
| A．In a word | B．As a result | C．On the whole | D．Believe it or not |
ions also declined quickly to the same levels as those of the control subjects.But there are limits to adaptation and loud noise becomes more troublesome if the person is required to concentrate on more than one task. For example, high noise levels affect the performance of subjects who were required to monitor three dials at a time, a task not unlike that of a plane pilot or an air-traffic controller. Similarly, noise did not affect a subject’s ability to track a moving line with a steering wheel, but it did affect the subject’s ability to repeat numbers while tracking (Finkelm and Glass 1970).
Probably the most significant finding from the research on noise is that its predictability is more important than how loud it is. We are much more able to “tune out” long-lasing background noise, even if it is quite loud, than to work under circumstances with unexpected disturbance of noise. In Glass and Singer’s study, in which subjects were exposed to bursts of noise as they worked on a task, some subjects heard loud bursts and others heard soft bursts. For some subjects, the bursts were spaced exactly one minute apart (predictable noise); others heard the some amount of noise overall, but the bursts occurred at random intervals (unpredictable noise). Subjects reported finding the predictable and unpredictable noise equally annoying, and all subjects performed at about the same level during the noise portion of the experiment. But the different noise conditions had quite different after-effects when the subjects were required to proofread written material under conditions of no noise. The study shows that the unpredictable noise produced more errors in the later proofreading task than predictable noise; and soft unpredictable noise actually produced slightly more errors on this task than the loud predictable noise.
Apparently, unpredictable noise produces more fatigue than predictable noise, but it takes a while for this fatigue to take its toll on performance.
小题1:When talking about people’s difficulty in sleeping in the mountains, what can be inferred in the passage?
| A．They usually do not prefer peace and quiet to noise. |
| B．They may be exposed to short bursts of very strange sounds. |
C．They prefer to h ear a certain amount of noise while they sleep. |
| D．They may not have adapted to a higher noise level in the city. |
| A．Problem-solving is much easier under quiet conditions. |
| B．Physiological reactions prevent the ability to work. |
| C．Bursts of noise hardly disturb problem-solving in the long term. |
| D．The physiological reactions of the control subjects declined quickly. |
| A．successful performance of a single task |
| B．tasks of pilots or air traffic controllers |
| C．ability to repeat numbers while tracking moving lines |
| D．ability to monitor three dials at once |
| A．Destroy the performance completely. |
| B．Have a negative effect on the performance. |
| C．Improve the performance greatly. |
| D．Have a positive influence on the performance. |
Americans are connected at unprecedented (前所未有的) levels一93% now use cell phones or wireless devices；one third of those are ‘smart phones’ that allow users to browse the Web and check e-mail，among other things. The benefits are obvious: checking messages on the road，staying in touch with friends and family，efficiently using time once spent waiting around. The downside：often，we’re effectively disconnecting from those in the same room.
That"s why，despite all the technology that makes communicating easier than ever，2010 was the Year We Stopped Talking to One Another. From texting at dinner to posting on Facebook from work or checking e-mail while on a date，the connectivity revolution is creating a lot of divided attention，not to mention social anxiety. Many analysts say it"s time to step back and reassess.
‘What we’re going to see in the future is new opportunities for people to be plugged in and connected like never before,’ says Scott Campbell. ‘It can be a good thing，but I also see new ways the traditional social fabric (社会结构) is getting somewhat torn apart.’
Our days are filled with beeps and pings·----many of which pull us away from tasks at hand or face-to-face conversations. We may feel that the distractions are too much，but we can’t seem to stop posting，texting or surfing.
‘We"re going through a period of adjustment and rebalancing,’ says Sherry Turkle and she wants to remind people that technology can be turned off.
‘Our human purposes are to really have connections with people,’ she says. ‘We have to reclaim it. It’s not going to take place by itself.’
小题1:What can be the best title for the passage?
| A．2010: The year technology developed quickly. |
| B．2010: The year technology sped up our life pace. |
| C．2010: The year technology replaced talking. |
| D．2010: The year technology made communicating easier. |
| A．the new technology always influences people’s life in a positive way |
| B．the new technology is so tempting that she could even put her daughter and husband behind |
| C．it is encouraging to see progress on the new technology every year |
| D．people are too dependent on the new technology to let go |
| A．The wide use of mobile devices has nothing to do with the ‘traditional social fabric’. |
| B．Mobile devices play a less important part in American life. |
| C．Mobile devices create a lot of divided attention and social anxiety. |
| D．Many analysts speak highly of the wide popularity of mobile devices. |
| A．Something must be done to get connection with people in reality again· |
| B．Using mobile services can help people get connection with each other. |
| C．Mobile services have a strong impact on people’s life. |
| D．The connection with people can happen naturally. |
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