Read the following article and select the best answer. Article: A few degrees can make a big difference when it comes to food storage.Foods can go bad if they get too warm.But for many of the world's poor, finding a good way to keep food cool is difficult.Refrigerators are costly and they need electricity. Yet spoiled food not only creates health risks but also economic losses.Farmers lose money when they have to throw away products that they cannot sell quickly. But in nineteen ninety-five a teacher in northern Nigeria named Mohammed Bah Abba found a solution.He developed the "Pot-in-Pot Preservation/Cooling System." It uses two round containers made of clay.A smaller pot is placed inside a larger one.The space between the two pots is filled with wet sand.The inner pot can be filled with fruit, vegetables or drinks.A wet cloth covers the whole cooling system. Food stored in the smaller pot is kept from spoiling through a simple evaporation process.Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.The evaporation process creates a drop in temperature of several degrees.This cools the inner pot and helps keep food safe from harmful bacteria.Some foods can be kept fresh this way for several weeks. People throughout Nigeria began using the invention.And it became popular with farmers in other African countries.Mohammed Bah Abba personally financed the first 5,000 pot-in-pot systems for his own community and five villages nearby. In 2000, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise.This award recognizes people trying to develop projects aimed at improving human knowledge and well-being.A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history.Winners receive financial assistance to help develop and extend their projects.The award is given every two years.The most recent one was given last year. Question: Mohammed Bah Abba got the Rolex Award for Enterprise because _ . - his invention was beneficial for the poor - his invention was simple and scientific - he advocated a wider use of his invention - he financed the Cooling System for the poor
his invention was beneficial for the poor

(Question)
Read the following article and select the best answer. Article: Today almost everyone knows computers and the Internet. If I ask you "What is the most important in your life ?" maybe you will say "Computers and the Internet." The first computer was made in 1946. It was very big but it worked slowly . Today computers are getting smaller and smaller. But they work faster and faster. What can computers do? A writer has said, "people can't live without computers today." The Internet came a little later than computers. It is about twenty-five years later than computers. But now it can be found almost everywhere. We can use it to read books, write letters, do shopping, play games or make friends. Many students like the Internet very much. They often go into the Internet as soon as they are free. They make friends on the Internet and maybe they have never seen these friends. They don't know their real names, ages, and even sex . They are so interested in making the "unreal friends" that they can't put their hearts into study. Many of them can't catch up with others on many subjects because of that. We can use computers and the Internet to learn more about the world. But at the same time, we should remember that not all the things can be done by computers and the Internet. Question: When the computer was invented, it was _ . - large and worked quickly1 - small and worked - large but worked slowly. - small but worked quickly .
(Answer)
large but worked slowly.

Ques: Read the following article and select the best answer. Article: While Jennifer was at home taking an online exam for her business law class, a monitor a few hundred miles away was watching her every move. Using a web camera equipped in Jennifer's Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked - remotely - to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down? In the battle against cheating, this is the _ and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid - that students haven't just searched the Internet to get the right answers. Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance. Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students' identities using personal information, such as the telephone number they once used. Other programs can produce unique exam by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test question are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating. Question: Which of the following is the best title of this passage? - The Advantages of Online Exams - The High-tech Methods in Online Courses - The Fight against Cheating in Online Education - The War against the Booming of Online Education
Ans: The Fight against Cheating in Online Education

Ques: Read the following article and select the best answer. Article: I don't often lose things and I'm always careful with money, so I was quite surprised when I reached for my wallet and it wasn't there. At first, I thought it was possible that I could have left it at home. Then I remembered taking it out to pay the taxi, so I knew I had it with me just before I walked into the restaurant. I wondered if it was possible that it could have dropped out of my pocket while I was eating dinner. I turned and walked back to the table where I had been sitting. Unluckily, there were several people sitting at the table at that time, so I had the waiter go over to the table to see if my wallet was on the floor. While the waiter was looking for it, the head of the restaurant came up to me and asked me if anything was wrong. I told him what had happened. He asked me to report the missing wallet to the police. I told him I didn't want to do so; I was in a hurry because I had to reach my waiting room before two o'clock, where some people were waiting to see me. I also told him that my biggest worry at the moment was how I was going to pay for the meal. He told me not to worry about that. He asked me to write down my name and address, and he said he would send me a bill . Question: When the writer couldn't find his wallet, his first thought was that _ - it had been given to the taxi-driver - he had dropped it in the taxi - he had lost his wallet again - it might be left at home
Ans:
it might be left at home