*Question*
Read the following article and select the best answer. Article: Solar water heaters can use energy from the sun to heat water. They are used around the world. The solar water heater is based on a design developed some years ago in Afghanistan. Since then, it has been built and used in many countries. It can heat seventy liters of water to 60degC. It can do this between sunrise and noon on a clear day with an average temperature of 32degC. There are two parts of the solar water heater. One part, the collector, is made of a metal plate painted black. This metal surface, placed in contact with the water, will heat the water. Black-painted surfaces that receive the sun's heat become hotter than those of any other color1. Metal plates that have raised parts on the surface work better than those without them. Once the water is heated, it is kept hot with special material, which allows the water to stay warm for a long time. The second part of the solar water heater holds the water for the system. This water tank can hold about one hundred liters of water. Two rubber pipes are connected to the water tank. One pipe lets water go into the system. The other lets water go out. When the water heater is working correctly, water will flow from the tank to the collector and back again. You can use the hot water at the top of the tank for washing and cleaning. This solar water heater is easy to build and operate. It will last about two years before the rubber pipes need to be replaced. Question: What is the text mainly about? - The history of solar water heaters. - Knowledge of solar water heaters. - The advantages of solar water heaters. - The steps of operating a solar water heater.
**Answer**
Knowledge of solar water heaters.

*Question*
Read the following article and select the best answer. Article: I've been living in China for a while -- long enough to observe the long-term deterioration of my own native language abilities, as well as those of my fellow English speakers. This deterioration can take different forms, one of which is the non-standard usage of the words. Its source is, specifically, Chinese culture, and its target is native English speakers. Below I give some of the common ways that the Chinese environment strikes down the native speaker's linguistic competence . Net bar: In Chinese, they're called "", This is fine. We generally call them "Internet cafe" in English. The Chinese seem to think that "" should be translated as "net bar" in English, and many careless foreigners have even been misled by this idea. Name card: In the English-speaking world, business people have lots of business meetings to discuss business. On these occasions, business people exchange specially printed pieces of paper known as business cards. In China everyone calls them "name cards", because in Chinese they are called "" and "name card" is a more direct translation . Bean curd. It's called "tofu," OK! This English word comes from Chinese. I know all dictionaries sold in China will tell you "" is "bean curd" in English and that may represent the two characters nicely, but "bean curd" is more a definition than a comfortable translation. And yet some foreigners start saying "bean curd" rather than tofu. Deplorable ! I think you see the pattern. The normal native way of saying something is replaced by a more unnatural way of saying it using other English words. If you've been living in China for a while and find yourself using all of these, you might be on dangerous ground. You're going to start making a fool of yourself back home. Look out! Resist Chinglish attempts at destroying your own command of your mother tongue! Question: Which of the following expressions is more native? - Bean curd - Tofu - Name card - Net bar
**Answer**
Tofu

*Question*
Read the following article and select the best answer. Article: Big Brothers Big Sisters is based on the simplicity and power of friendship.It is a program which provides friendship and fun by matching _ (ages 7-17) with a volunteer adult who can be both a role model and a supportive friend. Volunteer tutors come from all walks of life--married, single, with or without children. Big Brothers and Big Sisters are not replacement parents or social workers. They are tutors: someone to trust, to have fun with, to talk and go to when needed. A Big Sister and Little Sister will generally spend between one and four hours together three or four times each month for at least twelve months. They enjoy simple activities such as a picnic at a park, cooking, playing sport or going to a football match. These activities improve the friendship and help the young person develop positive self-respect, confidence and life direction. Big Brothers Big Sisters organizations exist throughout the world. It is the large and most well-known provider of tutor services internationally and has been operating for 25 years. Emily and Sarah have been matched since 2008. Emily is a 10-year-old girl who has experienced some difficulties being accepted by her schoolmates at school. " I was pretty sure there was something wrong with me." Emily's mum came across Big Brothers Big Sisters and thought it would be helpful to Emily by "providing different feedback about herself other than just depending on schoolmates to value her self-worth. Sarah wanted to take part in a volunteer program. "I googled it and found out how to be a part of it. I thought it would be fun for me to take part in making time to do something because sometimes it is all work and no play." Big Brothers Big Sisters has been helpful and enjoyable to both Emily and Sarah. They love and look forward to their time together and the partnership has certainly helped Emily be more comfortable in being the wonderful, happy and unusually good girl she is! Question: What is the aim of Big Brothers Big Sisters? - To offer students public services. - To help students improve their grades. - To organize sport activities for young people. - To provide partnership and fun for young people.
**Answer**
To provide partnership and fun for young people.

*Question*
Read the following article and select the best answer. Article: Millions of sports lovers are still thinking about one thing----the Winter Olympics in Sochi Russia. Close to 2900 men and women competed in the 2014 Winter Games about a month ago. The Olympics brought a lot of attention to Sochi, a city on the Black Sea, which is a popular area for vacation travelers. The area is known for its mild winters. At least $50 billion was spent on the 2014 Winter Games, making it the costliest Olympics in history. Seven billion dollars was spent on the 2010 Winter Games in Vancouver, Canada. Olympic officials chose Sochi to host the 2014 games almost seven years ago. At that time, Russian President Vladimir Putin said the games would cost about $13 billion. Yet the actual expenses exceeded his estimate. So where did all the money go? Some observers say the high cost is partly the result of security measures. Brian Jenkins, a terrorism expert from the RAND Corporation, gave the following explanation. There were anywhere between 70,000 and 100, 000 policemen and military troops deployed around the city. The main threat came from separatist and Islamist groups from the North Caucasus, especially from Chechnya and Dagestan. One group claimed responsibility for two suicide bombings in Volgograd last December. The attacks killed more than 30 people. The city is only about 600 kilometers away from Sochi. Bruce Hoffman is a terrorism expert from Georgetown University in Washington DC. He says the increased security made Sochi a difficult target for terrorists. It is thought that the terrorists' intention was to make life difficult for the Russians and to create some sort of incident that would take away the enjoyment. The last Olympians from around the world on Russian soil were in 1980. That was a year after Soviet troops invaded Afghanistan. More than sixty countries didn't take part in the Moscow Summer Games to show their anger. Question: It can be known from the passage that Bruce Hoffman was _ - a terrorism expert from the USA - the writer who wrote this article - an athlete who competed in Sochi - a terrorism expert from RAND Corporation
**Answer**
a terrorism expert from the USA