8．
Smog is a big problem in many chinese cities．But it seems that besides wearing a mask，few of us know what has caused the smog and what to do to beat it．Chai Jing，a former news anchor with China Central Television，discussed the questions in her documentary Under the Dome．
The 103-minute film was released on major Chinese video-sharing websides on Feb 28．In the film，Chai visits polluted places and talks to officials and scientists．She concludes that burning too much coal（煤） and oil are the main causes of PM2.5and smog．
To make things worse，according to Chai，the coal and oil we are burning is of poor quality and don't meet the standards（標準） for environmental protection．Therefore they have produced more harmful gas and particles（顆粒） to pollute the air．
To solve the problem，Chai suggests that we should clean our coal and oil or replace them with cleaner energy such as natural gas．
In her film，Chai also emphasized（強調） that ordinary people can do something to help control smog too．For example，we can live a greener life by using more public transportation．Or if we see things that could harm the environment，we can try to stop it．In one scene from the film，Chai sees a dirt mound in a building site exposed in the air，and ask the person in charge to cover it．When she sees a restaurant cooking without any suitable filter facilities（過濾設備），she calls the hotline 12369．The restaurant installed the filter a week later．
Chen Jinling，the new minister of environmental protection，praised Chai．"This film encourages ordinary people to concerned（關注） with the environment．This is what we need in the future．"
34．What's the main cause of smog according to Chai？B
A．Setting off too many fireworks．
B．Burning too much coal and oil．
C．Too many cars in big cities．
D．Too many factories and companies
35．Which of the following is not mentioned in Chai's suggestions towards reducing smog？D
A．Using cleaner energy．
B．Cleaning coal and oil．
C．Using narural gas．
D．Replacing coal with wind energy．
36．What can we tell from the story？D
A．Only factories produce heavy smog．
B．Only the government can control smog．
C．Smog can't be controlled by ordinary people．
D．Living a green life can help reduce smog
37．What's Chen Jing's attitude towards Chai's film．B
A．He didn't watch it
B．He thought highly on it．
C．He disagreed with it．
D．He criticized（批評） it．
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