Problem: Given the question: Write a multi-choice question for the following article: Article: The main cause of a heart attack is not exercise or stress -- it's air pollution, according to a study published in The Lancetthis month. Researchers found spending time in traffic, whether as a driver or a pedestrian , tops the list of risk factors that bring on a heart attack. Jon Ayres, professor of environmental and respiratory medicine at the University of Birmingham, says, "Air pollution is not only linked to strokes, heart attacks and cancer -- it has a deep effect on those with existing respiratory conditions." So how can you avoid the damage? We asked the experts for their tips. TAKE TO THE SIDE STREETS Avoid main roads. These have the highest number of vehicles and also more traffic jams, which tend to run on diesel . Diesel engines emit tiny particles that reach the lungs most easily. Choose side streets, pavements, parks and avenues lined with trees. BUY SOME HOUSEPLANTS We spend 90 percent of our time inside, but studies by the U.S. Environmental Protection Agency have found that pollution levels can be two to five times higher indoors than outside. Objects such as synthetic carpets, TV screens can emit chemicals called volatile organic compounds (VOC,), which have been linked to diseases such as cancer. Researchers at Curtin University in Perth, Australia, found an increase in asthma risk among children under three who had high VOC levels in their homes. Therefore, the application of air fresheners and houseplants can keep the circulation of the air and absorb the pollutants.
++++++++++++++++++++++++++++++++
The answer is:
Question: What is the passage mainly about?Options:A Tips to avoid the damage of air pollution.B Air pollution is the main cause of a heart attack.C Air pollution is linked to strokes, heart attacks and cancer.D Pollution levels can be two to five times higher indoors than outside.Answer:A

Problem: Given the question: Write a multi-choice question for the following article: Article: Earth Day is on April 22nd.People say thanks to the Earth and learn ways to keep the Earth safe and clean.But saving the Earth is not just for grow-ups.Kids are also taking an active part in it. The American writer and filmmaker Lynne made a film called Young Voices for the Planet.It lists a lot of stories about different kids who help to keep our environment clean. Team Marine, US A group of students at Santa Monica High School started an organization called Team Marine.They tell people why plastic bags are bad for sea animals and environment.In 2011, they successfully made lawmakers in their city stop people using plastic bags. Felix, 15, Germany In 2007, a 9-year-old boy, Felix, started a club,Plant for the Planet.It encourages children around the world to plant trees in their own countries.Felix helped plant 25 million trees in Germany and 120 million trees worldwide. Alec, 17, US When he was 12, Alec set up Kids VS Global Warming.It teaches kids about weather change and ways to stop the world getting warmer and warmer.Alec travels widely to encourage people to help stop global warming.He has given more than 70 talks across the country. Olivia, 13, US When Olivia was 11, she heard about the 2010 oil spill in the Gulf of Mexico.She painted 500 pictures of birds to raise money for the clean-up.She raised more than $200,000 to protect birds and other wild animals.
++++++++++++++++++++++++++++++++
The answer is:
Question: The passage is mainly about how _ .Options:A kids are saving the EarthB parents are planting treesC students are raising moneyD grow-ups are using plastics bagsAnswer:A

Problem: Given the question: Write a multi-choice question for the following article: Article: Car companies are developing vehicles that will plug into electric sockets,just like many laptops,digital cameras,cell phones and Mp4 do.Called"plug-in vehicles",these cars will get most of their power from electricity. Their drivers won't have to stop at gas stations as often as usual. The technology is more than just cool. In our car-filled world,plug-in vehicles could reduce the amount of gas we use,which keeps rising in cost now and then. Besides,driving around in these vehicles may even help the environment.Gas-burning cars produce a lot of greenhouse gas,which causes globe warming. The first company-produced plug-in vehicles could hit the roads by 2010. But engineers still have a lot of work to do to make the technology practical and inexpensive. Batteries are the biggest challenge. In the plug-in-vehicle world,Li-ion batteries are getting the most attention.These batteries can store a large amount of energy in a small package,and they last a longer time between charges.Li-ion batteries can fit laptops,cell phones,heart instruments and other similar pocket ones. But because cars are so big and heavy, it would still require a suitcase-sized Li-ion batteries to power about 12km of driving.What's more,the batteries are much expensive. "A car filled with batteries could go a long distance,"says Ted Bohn, an electrical engineer in Chicago."But it couldn't pull any people.and it would cost $100,000." So researchers need to work out how to make batteries smaller and cheaper,among other questions. "The answers don't exist yet,"Bohn says,"As a kid,I thought someone someplace knows the answer to everything.All of these questions haven't been decided.That's what engineering is about-making a guess,running tests and getting fine results."
++++++++++++++++++++++++++++++++
The answer is:
Question: The passage mainly talks about_of a new carOptions:A the developingB the speedC the appearanceD the batteriesAnswer:D