Question: Read the following article and answer the question. Article: A dense wave of smog began in the Chinese city of Harbin and the surrounding Heilongjiang, Jilin, and Liaoning Provinces on 20 October 2013. Unseasonably warm temperatures with very little wind across northeastern China coincided with the smoke from local farmers' burning straws and the start-up of Harbin's coal-powered central heating system. Record densities of fine particulates were measured in the city. In Harbin, the levels of PM2.5 (particulate matter) rise to 1,000 micrograms per cubic meter, worse than Beijing's historic highs. Visibility was reduced to below 50m in parts of Harbin, and below 500m in most of the neighbouring Jilin Province. On Fa Yuen Street in Harbin, visibility of less than 5m was reported. The smog reduced after October 23, 2013 and completely broke up on October 28, 2013 by the first local snow and icy rain due to a cold front moving in from Russia. Harbin lies in the north of China where winter temperatures can drop to -40degC, demanding a six-month heating season. Daily particulate levels of more than 40 times the World Health Organization recommended maximum level were reported in parts of Harbin. The smog remained till 23 October, when almost all monitoring stations in Heilongjiang, Jilin,and Liaoning Provincesreported readings above 200mg/m3forPM2.5. PM2.5 is the amount of particulate matter less than 2.5 micrometers in diameter in the air, with the WHO recommending a maximum 24-hour mean of 25 micrograms per cubic meter (mg/m3). On the morning of 25 October, PM2.5 measurements in Harbin had fallen to an average of 123mg/m3. All highways in the surrounding Heilongjiang Province were closed. In Harbin, all primary and middle schools were closed for three days and authorities stopped flights at the airports. Hospitals reported a 23 percent increase in admissions for breathing problems. However, this smog will have no influence on Harbin Ice Festival events later in December 2013. Air pollution in Chinese cities is of increasing concern to China's leadership. Particulates in... Question: What measure might be practical to reduce the happening of heavy smog? Answer:
OPTIONS:
- Forbidding people to own their private cars.
- Advocating people having one meal a day.
- Using natural gas to cook instead of coal.
- Encouraging family's coal-fired heating.
Answer: Using natural gas to cook instead of coal.

Question: Read the following article and answer the question. Article: Emily and Zach are confused! Their parents told them they could choose between Massachusetts and Arizona for their vacation this summer. Emily has always wanted to visit Boston, the capital of Massachusetts. Zach and she both agree that walking along the Freedom Trail would enable them to see Boston's most famous places of historic interest, like the site of the school Ben Franklin attended and the Old State House. If Emily and Zach go to Massachusetts, they could spend a few days at the beaches on Cape Cod. Emily loves body boarding, and Zach is great at body surfing. They both enjoy building sandcastles with their mom and dad. Zach finds learning about Native Americans wonderful and has always wanted to travel along the Apache Trail in Arizona. This mountain highway passes Native American ruins in Tonto National Forest. Emily is not as interested in traveling along this trail as Zach, but they both would like to visit Phoenix, the capital, and then travel to Grand Canyon National Park and Meteor Crater .Zach learned in science class that Meteor Crater is a hole over 4,000 feet wide and 520 feet deep that was created when a huge object from space fell to Earth. The object went so deep that it has never been found. Zach would really like to try to discover it. But Emily thinks if experienced scientists and researchers cannot find it, Zach might as well not even bother to try. The only drawback for Zach and Emily if they choose Arizona would be the heat. It is very hot and dry in this southwestern state. Massachusetts, on the other hand, is in northeastern United States. Here Zach and Emily and their parents could enjoy mild temperatures. Their parents love hot weather, but Zach and Emily do not really like to sweat. How will they ever decide to which state they should travel? If only they could take two trips! Question: Emily and Zach will spend their summer vacation . Answer:
OPTIONS:
- visiting their parents
- learning how to swim
- doing some sightseeing
- living with Native Americans
Answer: doing some sightseeing

Question: Read the following article and answer the question. Article: One day when I left a bookstore and walked on the street, I saw a woman standing outside the post office. She looked pale and worried. I stopped and asked if she needed help. She told me that her foot was hurting and she had to go to the hospital fight away, but there was no taxi. I wanted to make a trip to a food store later that day. I asked the woman where she was going. She told me the name of a hospital which was actually on the way to the food store. So I said, My car is parked nearby, How about my giving you a ride? It will save you some time and money. She agreed gratefully. When we got to the hospital, she thanked me again and again. Then I went to the food store and picked up what I went for. As I was waiting at the checkout, the man behind me said that he had a coupon for 20% off anything in the store. He gave it to me because he had an extra one and he wanted to do good things to others! I thanked him and let him go ahead of me in line to check out. Each action creates a ripple that finally comes back to us. Do you believe it? Question: Where did the author meet the woman? Answer:
OPTIONS:
- Near the hospital.
- Near the post office.
- Outside the food store.
- In the bookstore.
Answer:
Near the post office.