题目内容

And video cameras can be used to_______ people’s actions at home.

A. keep                B. make             C. record              D. watch

C

练习册系列答案
相关题目

       Dogs wag(摇摆) their tails in different directions depending on whether they are excited and wanting to move forward or threatened and thinking of moving back, a study has found.

       Researchers in Italy  examined the tail wagging behaviour of 30 dogs, catching their responses to a range of stimuli(刺激物) with video cameras. To conduct the study they chose 15 male dogs and 15 female ones aged between one and six years. The dogs were all family pets whose owners had allowed them to take part in the experiment at Bari University. The dogs were placed in a large wooden box with an opening at the front to allow for them to view various stimuli. They were tested one at a time.

       The researchers led by Professor Giorgio Vallortigara of the University of Trieste found that when the dogs were shown their owners—a positive experience—their tails wagged energetically to the right side. When they were shown an unfamiliar human they wagged to the right, but with somewhat less enthusiasm. The appearance of a cat again caused a right-hand side wag, although with less intensity again. The appearance of a large unfamiliar dog, similar to a German shepherd, changed the direction of tail wagging to the left. Researchers supposed the dog was thinking of moving back. When the dogs were not shown any stimuli they tended to wag their tails to the left, suggesting they preferred company. While the changes in the tail wagging were not easily noticed without the aid of video, it was thought that the findings could help people judge the mood (心情) of dogs. Computer and video systems, for example, could be used by professional dog trainers to determine the mood of dogs that they were required to approach.

71.The video cameras were used to catch the dogs’ responses because      .

A.it was easier to catch the dogs’ response changes in the tail wagging

B.the dogs were put in the wooden boxes and tested one at a time.

C.they enabled the dogs’ owners to know about their dogs’ habit

D.the dogs wagged their tails in different directions when they were in different moods

72.The underlined word “intensity” in the passage means        .

A.surprise                     B.worry                       C.excitement                 D.interest

73.When there are no stimuli, a dog will         .

A.wag to the left                                              B.wag to the right

C.not wag at all                                                D.wag to the left and then to the right

74.The underlined word “they” refers to         .

A.the dogs                    B.the trainers                C.the systems               D.the researchers

75.The purpose of doing the experiment is         .

A.to train dogs for their owners                         B.to help people judge the mood of dogs

C.to help dogs find company                             D.to help people choose their pet dogs

阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。
D
The first MP4 player was born years ago. Soon many music fans were wondering how fantastic it is! If you have been into technology enough, perhaps you may have a knowledge of the MP4. If not, you do need to know something before buying one, even if you are familiar with MP3. MP3 is the CD-like disc with greater capacity. How about MP4? This small digital product will really enrich the joy from listening to music. You can even feel the “touch” of music to your soul!
Now, some similar digital products advertised as “MP4 player” are simply MP3 players, which do not play video and MPEG format and also lack other particular functions. These products confuse some buyers, as they may think the “MP4” players simply mean they can do more than MP3.
What is MP4?
It is a multimedia container. It is not only used to store digital audio and digital video streams, especially those of MPEG, but can also be used to store other data such as subtitles and pictures. As a most modern container format, it allows streaming over the Internet.
With the help of a piece of MP4 video equipment, you can change various programs such as MPEG to MP4, ASX to MP4, AVI to MP4 and so on, which can be done very quickly and easily without any effect on the sound quality. By installing DVD-MP4 software, you can transfer particular music from a DVD to an MP4 video file. It really excites your listening music experience.
Then, there is MP4 advanced and you can set your own collection of all the programs—TV shows, games, and music. You can even see movies which are still running in cinema. What else digital product could you possibly ask for?
【小题1】 It is suggested here that you should ______ before buying an MP4 player.

A．first be a music fanB．have a knowledge of MP4
C．get familiar with MP3D．buy a CD-like disc
【小题2】From the passage, we can see that MP4 is ______ MP3.
A．much bigger thanB．just as advanced as
C．not so particular asD．more functional than
【小题3】Which function of MP4 is NOT directly mentioned in this passage?
Ａ．Storing digital audio and video streams.
Ｂ．Recording some movies in cinema.
Ｃ．Playing TV shows, games and movies.
Ｄ．Transferring particular music from a DVD.
【小题4】From the last sentence, it’s clear that the writer tries to tell us it is ______.
A．reasonable to buy other digital products
B．impossible to buy something else
C．a very wise choice to buy an MP4
D．an exciting experience to buy an MP3

Nowadays people are troubled by the violence that spreads throughout the media. Movies, television and video games are full of gunplay and bloodshed, and one might reasonably ask what’s wrong with a society that presents videos of violence as entertainment.
Viewing large amounts of violent television and video games may well contribute to violent behavior in certain individuals. The trouble comes when researchers downplay uncertainties in their studies or overstate the case for causality（因果关系）. Skeptics were dismayed several years ago when a group of societies including the American Medical Association tried to end the debate by issuing a joint statement: “At this time, well over 1,000 studies… point to a causal connection between media violence and aggressive behavior in some children.”
Freedom-of-speech advocates accused the societies of catering to politicians, and even disputed the number of studies (most were review articles and essays, they said). When Jonathan Freedman, a social psychologist at the University of Toronto, reviewed the literature, he found only 200 or so studies of television-watching and aggression. And when he weeded out “the most doubtful measures of aggression”, only 28% supported a connection.
The critical point here is causality. The alarmists say they have proved that violent media cause aggression. But the assumptions behind their observations need to be examined. When labeling games as violent or non-violent, should a hero eating a ghost really be counted as a violent event? And when experimenters record the time it takes game players to read “aggressive” or “non-aggressive” words from a list, can we be sure what they are actually measuring? The intention of the new Harvard Center on Media and Child Health to collect and standardize studies of media violence in order to compare their methodologies, assumptions and conclusions is an important step in the right direction.
Another appropriate step would be to tone down the criticism until we know more. Several researchers write, speak and testify quite a lot on the threat posed by violence in the media. That is, of course, their privilege. But when doing so, they often come out with statements that the matter has now been settled, drawing criticism from colleagues. In response, the alarmists accuse critics and news reporters of being deceived by the entertainment industry. Such clashes help neither science nor society.
【小题1】Why is there so much violence shown in movies, TV and video games?

A．Showing violence is thought to be entertaining.
B．Something has gone wrong with today’s society
C．Many people are fond of gunplay and bloodshed.
D．There is a lot of violence in the real world today.
【小题2】What is the skeptics’ view of media violence?
A．Violence on television is fairly accurate reflection of real-world life.
B．Most studies exaggerate (夸大) the effect of media violence on the viewers.
C．A causal relationship exists between media and real-world violence.
D．The influence of media violence on children has been underestimated.
【小题3】The author uses the term “alarmists” to refer to those who _________.
A．use standardized measurements in the studies of media violence
B．initiated the debate over the influence of violent media on reality
C．insist on a direct link between violent media and aggressive behavior
D．use appropriate methodology in examining aggressive behavior
【小题4】The underlined phrase “weeded out” in Paragraph 3 most probably means _________.
A．got rid of things that are not good B．removed unwanted parts from something
C．picked out things that are useful D．took away unnecessary details of a report
【小题5】What does the writer think of the debate concerning the relationship between the media and violence?
A．He more than agrees with the views held by the alarmists.
B．It should come to an end since the matter has now been settled.
C．The past studies in this field have proved to be misleading.
D．More studies should be conducted before conclusions are drawn.

阅读下面短文，简要回答问题。

One of the greatest things about growing older is that you get to stay up late. It’s not just your parents who that decision. Your body lets you enjoy dark hours, too.

Resent study has shown that brain changes during teen years make it easier for kids to stay up late. “But it doesn’t mean that you should stay up late just because you can stay up late,” scientists say. Young people who don’t get enough sleep are often late for school, or they miss it completely. And their grades go down. “If you’re sleeping in school, you’re not learning,” says Mary Carskadon who is a sleep researcher.

Lack of sleep is a growing problem in the United States. Schools have been starting earlier in recent years. And with TV, computers, and video games attracting them, people of all ages are sleeping less than their parents or their grandparents did.

Sleep is important because it gives our bodies time to recover from the stress (压力) of living. Studies show that the adults (成人) who sleep less than 6 hours a night have mote heart problems and die sooner than the adults who sleep 7 to 8 hours a night.

How much sleep do you need? It depends mainly on your age. Babies often sleep for the most of the day. By the time they’re 10 years old, kids need an average of 10 hours a night. As they get older, kids have signs to sleep less. But given the chance in an experiment to sleep as long as they want to, young teenagers have 10 hours of sleep. There are even some indications that teenagers may need more sleep than younger kids.

1. Find in the passage a word closest in meaning to the underlined word “indications”.（在文章中找一个与indications意义相近的词） (2分)

_______________________________________.

2. What is the main cause of young teenagers’ staying up late? (回答字数不超过8个) (3分)

_________________________________________________________________.

3. Why is sleep so important? (回答字数不超过13个) (3分)

________________________________________________________________.

4. What can be the best way to ensure the sleeping time of the school children in the USA according to the passage? (回答字数不超过6个) (2分)

__________________________________________________________________.

 

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网