Read the following article and select the best answer. Article: Researchers have found more evidence that suggests a relationship between race and rates of lung cancer among smokers. A new study shows that black people and Native Hawaiians are more likely to develop lung cancer from smoking. It compared their risk to whites, Japanese, Americans and Latinos. The study, however, found almost no racial or ethnic differences among the heaviest smokers. These were people who smoked more than thirty cigarettes each day. Other comparisons have shown that blacks are more likely than whites to get lung cancer from smoking. But the scientists say few studies have compared the risks among Native Hawaiians, Asians and Latinos. Researchers at the University of Southern California and the University of Hawaii did the new study. The New England Journal of Medicine published the findings. The eight-year study involved more than 180,000 people. They provided details about their tobacco use and their diet as well as other information. They included current and former smokers and people who never smoked. Almost 2,000 people in the study developed lung cancer. Researchers say genetics might help explain the racial and ethnic differences. There could be differences in how people's bodies react to smoke. But environmental influences, including the way people smoke, could also make a difference. African-Americans and Latinos in the study reported smoking the fewest cigarettes per day. Whites were the heaviest smokers. But the scientists note that blacks have been reported to breathe cigarette smoke more deeply than white smokers. This could fill their lungs with more of the chemicals in tobacco that cause cancer. Many researchers disagree not only about the effect of race on the risk of disease, but even about the meaning of race. Yet scientists know that some diseases affect different groups differently. And some drug companies have begun to develop racially targeted medicines. Last June, the United State Food and Drug Administration approved a drug designed to treat heart failure in black... Question: The subjects that the smoking researchers investigate are made up of _ . - heavy smokers in America - the black and white people - the Asians and Hawaiians - smokers and non-smokers
smokers and non-smokers

Read the following article and select the best answer. Article: Singer-songwriter Tori Kelly is close to a huge breakthrough. Her recent performances on the BET Awards shows have created a sensation in pop music. You couldn't call Kelly an overnight success. Sure she's only 22. The Southern Californian girl first appeared in public on the talent show "Star Search" when she was only 10. But her real appearance came from posting videos on YouTube. Eventually Kelly made her way to "American Idol", and advanced through to Hollywood. But she did not make the Top 24. That loss encouraged her to write more of her own material, which eventually became part of her first album "Handmade Songs by Tori Kelly". "Even just releasing music in general is an achievement. I get to put out a whole album of songs that I just put my whole heart into, and people are responding really well to it," she said. "It's like the best feeling in the world because these are songs about my life. So it's really cool to be able to do what I love." "Handmade Songs" sold well enough to reach the top 10 in a number of music charts .She followed that success with live performances at clubs in Los Angeles. Recently, Kelly excited audiences at the Billboard Music Awards with her performance of her song "Nobody Love". The singer-songwriter says that being within reach of her goal is amazing. "I think all the awards shows I have done so far have just been so _ l," she said. "Like, I always dreamed of being on different awards shows, sitting at home on my sofa and watching. I think as a kid I just always put myself on that stage, and the fact that it's actually happening, that I get to be a part of these shows is unbelievable." Kelly released her full-length album "Unbreakable Smile" in June, 2015. Her single "Should've been us" is also rising on the Billboard Hot 100. Question: It can be known from the passage that Tori Kelly _ . - has a great gift for pop music - focuses on her career because she loves music - will change her profession soon. - will face more difficulties in the future.
focuses on her career because she loves music

Q: Read the following article and select the best answer. Article: The first ancient Olympic Games for which we still have written records were held in 776 BC. Coroebus won the only event at the Olympics. This made him the first Olympic champion in history. Then the Olympic Games developed and continued to be held every four years. In 393 AD, the Roman Emperor Theodosius I, a Christian, put a stop to the Games. In 1892, a young Frenchman named Pierre de Coubertin suggested starting the Olympic Games again but failed. Two years later, Coubertin organized a meeting with 79 people representing nine countries. At this meeting he got what he wanted. All the delegates at the meeting voted for the Olympic Games. They also decided to have Coubertin found an international committee to organize the Games. This committee became the International Olympic Committee (IOC) and Demetrious Vikelas from Greece was chosen to be its first president. Athens was chosen for the revival of the Olympic Games and the planning began. The first modern Olympic Games opened in the first week of April, 1896. Since the Greek government didn't have enough money to build a stadium, a wealthy Greek man, Georgios Averoff, donated over $100,000 to repair the Panathenaic Stadium built in 330 BC.Since the Games were not well publicized internationally, athletes were not nationally chosen but rather came by themselves. Some athletes were tourists who happened to be in the area during the Games. Question: What can we know about the first Olympic Games? - There was only one event in it. - It opened in the first week of April 1896. - Coroebus was the first man to take part in it. - It was stopped by the Roman Emperor Theodosius I.
A: There was only one event in it.

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Read the following article and select the best answer. Article: Supply and demand is perhaps one of the most basic concepts of economics and it is the backbone of a market economy. Demand refers to how much of a product or service is desired by buyers. The quantity demanded is the amount of a product people are willing to buy at a certain price; the relationship between price and quantity demanded is known as the demand relationship. Supply represents how much the market can offer. The quantity supplied refers to the amount of a certain goods producers are willing to supply when receiving a certain price. The relationship between price and how much of a goods or service is supplied to the market is known as the supply relationship. Price, therefore, is a reflection of supply and demand. The law of demand states that, if all other factors remain equal, the higher the price of a product, the fewer people will demand that product. The amount of goods that buyers purchase at a higher price is less as the price of a product goes up, so does the opportunity cost of buying that product. Like the law of demand, the law of supply shows the quantities that will be sold at a certain price. But unlike the law of demand, the supply relationship shows an upward slope. This means that the higher the price, the higher the quantity supplied. Producers supply more at a higher price because selling a higher quantity at a higher price increases the whole income. Now that we know the laws of supply and demand, let's turn to an example to show how supply and demand affect price. Imagine that a CD of your favorite band is sold for $20. Because the record company's previous analysis showed that consumers will not demand CDs at a price higher than $20, only ten CDs were sold because the opportunity cost is too high for suppliers to produce more. If, however, the ten CDs are demanded by 20 people, the price will then rise. As a result, the rise in price should cause more CDs to be supplied as the supply relationship shows that the higher the price, the higher the quantity supplied. If,... Question: The text is written mainly _ . - to persuade people to buy more products - to let people know more about a CD - to explain the relationships between demand, supply and price - to tell people how to buy things reasonably
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to explain the relationships between demand, supply and price