Read the following article and select the best answer. Article: The word "sport" first meant something that people did in their free time. Later it often meant hunting wild animals and birds. About a hundred years ago the word was first used for organized games. This is the usual meaning of the word today. People spend a lot of their spare time playing football, basketball, tennis and many other sports. Such people play because they want to. A few people are paid for the sport they play. These people are called professional sportsmen. They may be sportsmen for only a few years, but during that time the best ones can earn a lot of money. For example, a professional footballer in England earns more than 30,000 dollars a year. The stars earn a lot more. International golf and tennis champions can make more than 500,000 dollars a year. Of course, only a few sportsmen can earn as much money as that. Perhaps the most surprising thing about sportsmen and money is that the stars can earn more money from advertising than from sports. An advertisement for sports equipment does not simply say "Buy our things". It says "Buy the same shirt and shoes as ...". Famous sportsmen can even advertise things like watches and food. They allow the companies to use their names or a photograph of them and they are paid for this. Sport is no longer just something for people's spare time. Question: According to the passage, an international golf champion can make _ in a year. - more than 500,000 dollars - more than 30,000 dollars - 500,000 dollars - 30,000 dollars
more than 500,000 dollars

Read the following article and select the best answer. Article: A modern-day love story of a man seeing the girl of his dreams across a New York subway train and tracking her down over the Internet has failed to have a fairytale ending with the relationship over. For Web designer Patrick Moberg, then 21, from Brooklyn, it was love at first sight when he saw a woman on a Manthttan train last November. But he lost her in the crowd so he set up a website with a sketch picture to find her--www.Nygirlofmydreams.com. Unbelievably in a city of 8 million people, it only took Moberg 48 hours to find the woman, with his phone ringing non-stop and email box overflowing. New Yorkers took pity on the subway Romeo and joined his hunt. The mysterious girl was named as Camille Hayton, from Melbourne, Australia, who was working at the magazine Black Book and also lived in Brooklyn. One of her friends saw the sketched picture on the Web site and recognized her. But after finding each other, appearing on TV and getting international press, the couple took their romance out of the public eye, with Moberg closing down the Web site and with both refusing to make any more comments--until now. Hayton told Australian newspaper The Sunday Telegraph that she dated Moberg for about two months but it just didn't work out. "I say we dated for a while but now we're just friends," Hayton, now 23, told the newspaper. Hayton said she is still recognized about three times a week on the streets of Manhattan as "that girl" and the question is always the same: "So what happened?" "I think the situation was so intense that it linked us," she said, adding, "it linked us in a way that you could mistake, I guess, for being more romantic than it was. I don't know. But I wanted to give it a go so didn't wonder what if, what if?" Hayton told The Sunday Telegraph that she is enjoying single life in New York, keeping busy with acting classes, working in two clothing stores. Last week she had a small role as a waitress in the long-running daytime soap As the World Turns. "I just can't believe it happened. It feels like... Question: Moberg found the girl in a short time because_. - he phoned everybody in the city - he got help from the net citizens - he continued his hunt day and night - he e-mailed everybody in the city
he got help from the net citizens

Q: Read the following article and select the best answer. Article: Many science fiction stories tell about explorers arriving in a new world. The explorers then use some kind of high-tech device to test for breathable air or signs of life. But here on Earth, science fiction is becoming reality through a new sampling technology called environmental DNA, or e-DNA for short. Scientists can use it to identify rare or invasive species, study bio-diversity or estimate fish populations with just a little air or water. Ryan Kelly is an ecologist at the School of Marine and Environmental Affairs at the University of Washington in Seattle. He works in a laboratory there with other researchers. They study the genetic material released by living creatures. "Essentially we can take a sample of soil or air -- and in our case -- water, and we can sequence(to arrange the order of genes)the DNA out of it and tell you what is there." Ryan Kelly says he and his research team are studying water samples collected from Puget Sound. He says the cost of gene sequencing has "been reduced greatly in recent years." That makes DNA testing more widely available. Environmental DNA can be used in two ways. One is to identify the creatures that live in a certain place. The other is to confirm the presence or lack of a specific creature. Caren Goldberg heads the new e-DNA lab at Washington State University in Pullman, Washington. She is one of the first biologists in the northwestern United States to take the technology from the testing phase to actually using it. "It is extremely useful for species that are really hard to find. I have spent many hours looking for species that I was pretty sure were there -- looking under rocks, looking in water, doing all kinds of surveys." Caren Goldberg sees e-DNA as a way to get answers more efficiently, safely and with less destruction compared to traditional survey techniques. Until recently, scientists depended on diving deep, netting or using an electric current to temporarily catch fish. "We're absolutely at this point where proof-of-concept has been established. I... Question: The passage can be sorted as a(n) _ . - science fiction - experiment report - science report - bio-diversity discovery
A: science report

(Question)
Read the following article and select the best answer. Article: What will power your house in the future? Nuclear, wind, or solar power? According to scientists at the Massachusetts Institute of Technology (MIT) in the US, it might be leaves -- but artificial ones. Natural leaves are able to change sunlight and water into energy. It is known as photosynthesis . Now researchers have found a way to imitate this seemingly simple process. The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts . Similar to natural leaves, it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell, which uses those two materials to produce electricity, located either on top of a house or beside the house. Though the leaf is only about the shape of a poker card, scientists claimed that it is promising to be an inexpensive source of electricity in developing countries. "One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology," said Nocera at a conference of the American Chemical Society. The artificial leaf is not a new idea. The first artificial leaf was invented in 1997 but was too expensive and unstable for practical use. The new leaf, by contrast, is made of cheap materials, easy to use and highly stable. In laboratory studies, Nocera showed that an artificial leaf prototype could operate continuously for at least 45 hours without a drop in activity. The wonderful improvements come from Nocera's recent discovery of several powerful, new and inexpensive catalysts. These catalysts make the energy transformation inside the leaf more efficient with water and sunlight. Right now, the new leaf is about 10 times more efficient at carrying out photosynthesis than a natural one. Besides, the device can run in whatever water is available; that is, it doesn't need pure water. This is important for some countries that don't have access to pure water. With the goal to "make... Question: The main idea of this passage is about _ . - saving energy - a mixture of water power and solar energy - an invention copying photosynthesis - an introduction to the history of artificial leaves
(Answer)
an invention copying photosynthesis