Watching online open classes of US top universities has become necessary for many young Chinese who find it a shortcut to make their life more meaningful, in addition to learning knowledge and language.

Guo Lei, a native of Guangzhou, has become addicted to various open courses after she watched the online video of "Justice: What's the right thing to do."The video clip was taken during an open class taught by Michael Sandel, professor of philosophy at Harvard University.

Sandel set up a situation in which a high-speed train with a technical problem is running towards five people who are working on the current track, while there is only one worker on the adjacent (相邻的) track.He inspired students to discuss what the driver should do -- to change the direction for five lives -- which apparently will kill the other -- or to do nothing and allow five people to die.

Guo said she was immediately attracted by the topic and the discussion of the Harvard students about morality and justice.She even introduced the case to her colleagues for discussion, since Sandel did not give an answer, unlike most Chinese teachers she knew before.

The inspiring and lively teaching style of American professors refreshed Guo's impression about the traditional score-oriented Chinese educational system and prompted more Chinese to frequently search and watch open class resources of American top colleges, including Massachusetts Institute of Technology (MIT) and University of California Berkeley.

On China's social networking websites, such as renren.com, kaixin001.com and sina.com, netizens have spontaneously formed many study groups to share video resources and exchange opinions.Volunteers have added English or Chinese subtitles onto the videos to help more Chinese enjoy the videos without language difficulties.

"The popularity of American open classes reflects the spirit of sharing," said Yu Xinke, Vice chancellor with the Continuous Education School of South China University of Technology.

If the train driver changes the current track , how many people will be killed?(No more than one word)

Why can Chinese have no difficulty enjoying the foreign class videos?（No more than 10 words）

Besides knowledge and language, list three other things Chinese can learn from watching such foreign online class? (No more than 15 words in total)

①                                                    

②                                                         

③                                                       

What is the main idea of this passage?  (No more than 10 words)

Watching online open classes of US top universities has become necessary for many young Chinese who find it a shortcut to make their life more meaningful, in addition to learning knowledge and language.

Guo Lei, a native of Guangzhou, has become addicted to various open courses after she watched the online video of "Justice: What's the right thing to do."The video clip was taken during an open class taught by Michael Sandel, professor of philosophy at Harvard University.

Sandel set up a situation in which a high-speed train with a technical problem is running towards five people who are working on the current track, while there is only one worker on the adjacent (相邻的) track.He inspired students to discuss what the driver should do -- to change the direction for five lives -- which apparently will kill the other -- or to do nothing and allow five people to die.

Guo said she was immediately attracted by the topic and the discussion of the Harvard students about morality and justice.She even introduced the case to her colleagues for discussion, since Sandel did not give an answer, unlike most Chinese teachers she knew before.

The inspiring and lively teaching style of American professors refreshed Guo's impression about the traditional score-oriented Chinese educational system and prompted more Chinese to frequently search and watch open class resources of American top colleges, including Massachusetts Institute of Technology (MIT) and University of California Berkeley.

On China's social networking websites, such as renren.com, kaixin001.com and sina.com, netizens have spontaneously formed many study groups to share video resources and exchange opinions.Volunteers have added English or Chinese subtitles onto the videos to help more Chinese enjoy the videos without language difficulties.

"The popularity of American open classes reflects the spirit of sharing," said Yu Xinke, Vice chancellor with the Continuous Education School of South China University of Technology.

If the train driver changes the current track , how many people will be killed?(No more than one word)

Why can Chinese have no difficulty enjoying the foreign class videos?（No more than 10 words）

Besides knowledge and language, list three other things Chinese can learn from watching such foreign online class? (No more than 15 words in total)

①                                                    

②                                                         

③                                                       

What is the main idea of this passage?  (No more than 10 words)

Watching online open classes of US top universities has become necessary for many young Chinese who find it a shortcut to make their life more meaningful, in addition to learning knowledge and language.

Guo Lei, a native of Guangzhou, has become addicted to various open courses after she watched the online video of "Justice: What's the right thing to do."The video clip was taken during an open class taught by Michael Sandel, professor of philosophy at Harvard University.

Sandel set up a situation in which a high-speed train with a technical problem is running towards five people who are working on the current track, while there is only one worker on the adjacent (相邻的) track.He inspired students to discuss what the driver should do -- to change the direction for five lives -- which apparently will kill the other -- or to do nothing and allow five people to die.

Guo said she was immediately attracted by the topic and the discussion of the Harvard students about morality and justice.She even introduced the case to her colleagues for discussion, since Sandel did not give an answer, unlike most Chinese teachers she knew before.

The inspiring and lively teaching style of American professors refreshed Guo's impression about the traditional score-oriented Chinese educational system and prompted more Chinese to frequently search and watch open class resources of American top colleges, including Massachusetts Institute of Technology (MIT) and University of California Berkeley.

On China's social networking websites, such as renren.com, kaixin001.com and sina.com, netizens have spontaneously formed many study groups to share video resources and exchange opinions.Volunteers have added English or Chinese subtitles onto the videos to help more Chinese enjoy the videos without language difficulties.

"The popularity of American open classes reflects the spir it of sharing," said Yu Xinke, Vice chancellor with the Continuous Education School of South China University of Technology.

If the train driver changes the current track , how many people will be killed?(No more than one word)

Why can Chinese have no difficulty enjoying the foreign class videos?（No more than 10 words）

Besides knowledge and language, list three other things Chinese can learn from watching such foreign online class? (No more than 15 words in total)

①                                                   

②                                                         

③                                                       

What is the main idea of this passage?  (No more than 10 words)

Watching television more than two hours a day early in life can lead to attention problems later in adolescence, according to a study released on Tuesday.
The roughly 40 percent increase in attention problems among heavy TV viewers was observed in both boys and girls. The link was established by a long-term study of the habits and behaviors of more than 1,000 children born in Dunedin, New Zealand, between April 1972 and March 1973.
The children aged 5 to 11 watched an average of 2.05 hours of weekday television. From age 13 to 15, time spent in front of the tube rose to an average of 3.1 hours a day.
"Those who watched more than two hours, and particularly those who watched more than three hours, of television per day during childhood had above-average symptoms of attention problems in adolescence," Carl Landhuis of the University of Otago in Dunedin wrote in his report, published in the journal Pediatrics.
Young children who watched a lot of television were more likely to continue the habit as they got older, but even if they did not the damage was done, the report said.
"This suggests that the effects of childhood viewing on attention may be long lasting," Landhuis wrote.
Landhuis offered several possible explanations for the association.
One was that the rapid scene changes common to many TV programs may over stimulate（刺激）the developing brain of a young child, and could make reality seem boring by comparison. "Hence, children who watch a lot of television may become less tolerant of slower-paced and more mundane tasks, such as school work," he wrote.
It was also possible that TV viewing may supplant other activities that promote concentration, such as reading, games, sports and play, he said.
Previous studies have linked the sedentary固定不动的）habit of TV watching among children to obesity and diabetes, and another study in the same journal cited the poor nutritional content of the overwhelming majority of food products advertised on the top-rated US. children's television shows.
Up to 98 percent of the TV ads promoting food products that were directed at children aged 2 through 11 "were high in either fat, sugar, or sodium," wrote Lisa Powell of the University of Illinois in Chicago.
56. The recent survey shows that _________.
A. watching TV can cause all kinds of diseases for children
B. TV sets have played an important part in our daily lives
C. Watching TV over 2 hours a day early in life can cause attention problems later in adolescence
D. watching TV has side effects on children’s future
57. People used to think that _________.
A. watching TV more than 2 hours every day did good to children’s health
B. the sedentary habit of TV watching among children could easily lead to obesity and diabetes
C. the children wasn’t patient with their homework because of watching TV too much
D. it was very important for children to watching TV early in life
58. The underlined word “Hence” means _________.
A. In that case    B. And yet    C. On the contrary    D. For this reason
59. In Landhuis’ opinion, _________.
A. attention problems caused by watching TV during childhood may be hard to get rid of
B. how to develop children’s attention problems is a lasting problem
C. the key of settling attention problems is not watching TV too much
D. there shouldn’t have many food products ads on children's television shows

Watching television makes it easier for toddlers（学走路的孩子）to kick and scream, according to a U.S. study. Children under two should not watch any TV. The longer they sit in front of the box, the worse their behavior becomes.
Just having the TV on in the background, even if the child wasn’t watching it, was also connected to troublemaking behavior although the relationship wasn’t as strong, said the researchers.
“Parents should be smart about TV use,” researcher Jennifer Manganello from the University at Albany, New York, said.
“They should limit the time that children use TV, pay attention to the content of TV programs, and consider how TV is used throughout the home.”
The study looked at 3,128 women from 20 U.S. cities who had a child between 2005 and 2008.
While there was some diversity（差异）of education among the women, one-third hadn’t graduated from high school.
Two-thirds of the mothers said their three-year-old watched more than two hours of TV a day, and the average（平均的）viewing time for children was around three hours. On average, the TV was on for about five additional hours on a common day.
After accounting for factors（因素）such as living in a violent neighborhood, scientists also found watching TV was strongly connected to behavior such as hitting others, having angry moods, being disobedient（不服从的）, and screaming a lot.
The researchers thought that children may see violence on TV, and spend less time on positive development tasks such as reading or playing.
The American Academy of Paediatrics suggests no TV at all for children at two and younger, and two hours a day or less for older kids.
【小题1】what is the main idea of the passage?