Read the article and select the best answer. Article: Throughout history, people have been interested in knowing how languages first began, but no one knows exactly where or how this happened. However, we do know a lot about languages, the languages of today and also the languages of earlier times. There are probably about 3,000 languages in the world today. Chinese is the language with the most speakers. English, Russian and Spanish are also spoken by many millions of people. On the other hand, some languages in the world have less than one hundred speakers. There are several important families of languages in the world. For example, most of the languages of Europe are in one large family called Indo-European. The original language of this family was spoken about 4,500 years ago. Many of the present day languages of Europe and India are modern forms of the language of 4,500 yeas ago. Languages are always changing. The English of today is very different from the English of 500 years ago. In time some even died out completely. About 1,000 years ago, English was a little-known relative of German spoken on one of the borders of Europe. If a language has a large number of speakers or if it is very old, there may be differences in the way it is spoken in different areas. That is, the language may have several dialects. Chinese is a good example of _ differences. Chinese has been spoken for thousands of years by many millions of speakers. The differences between the dialects of Chinese are so great that speakers of Chinese from some parts of China can't understand speakers from other parts. Question: According to the passage, _ seems to have changed a lot. Options: A: German B: English C: Spanish D: Chinese
B

Read the article and select the best answer. Article: A new study gives us the warning that about thirty percent of the world's people may not have enough water by the year 2025. A private American organization called Population Action International did the new study. It says more than three-hundred-thirty-five-million people lack enough water now. The people live in twenty-eight countries. Most of the countries are in Africa or the Middle East. P-A-I researcher Robert Engelman says by the year 2025, about three-thousand-million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on Earth stays the same. Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase. The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters not safe. Mr. Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning. The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture. The report also says long-term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow... Question: _ are expected to have severe water problems by the year 2025 Options: A: No countries B: 18 countries C: 46 countries D: 28 countries
C

Q: Read the article and select the best answer. Article: Life in space will certainly take some getting used to!But the space station has been designed to keep the astronauts as comfortable as possible--the modules are roomy,bright,and kept at a constant 70 degrees Fahrenheit.It's important the crew members are comfortable because they'll be busy aboard the station.In a typical workday,crew members will spend 14 hours working and exercising,1.5 hours preparing and eating meals,and 8.5 hours sleeping.Here are some other fun facts about life aboard the station: Food Come mealtime,astronauts will have a special dining kitchen.Space food just keeps getting better--and more like food we enjoy here on Earth.In early space missions,astronauts could eat only freezedried food that didn't require any preparation.But the space station is equipped with water,microwave ovens,and refrigerators,allowing the folks on board to eat more "normal" types of food,including fruit,vegetables,and ice cream! Sleep Each crew member has a private room.With no gravity,they'll need to tie themselves to their beds,or they will float away!That might sound like a strange way to sleep,but astronauts from past space missions report that sleeping in space is actually pretty great! Exercise You might not think it,but exercise is even more important on the station than it is on Earth.There is not much gravity in space.Astronauts don't stand up,sit down or walk in space,so their muscles and bones don't have to work much--and this muscle and bone loss can be dangerous back on Earth.To fight this,astronauts on the station will exercise on bikes,rowing machines,and other equipment about two hours every day. Clothing Astronauts will have to wear special space suits while traveling aboard the U.S.shuttle or Russian rockets.But once they're safe inside the space station,crew members can wear regular clothing.Of course,a specially designed,pressurized space suit is required for space walks.It has to withstand flying pieces and protect the astronauts from dramatic temperature changes.It can range from 120... Question: The facts about life in space are all mentioned EXCEPT _ . Options: A: clothing B: entertainment C: sleep D: exercise
A: B

(Question)
Read the article and select the best answer. Article: Our children feel stressed out by an educational system that actually uses stress as an educational technique. It's a constant pressure of homework deadlines,essays and exams. And our children are told at a young age that failing a test means that they are failures in life. They'll end up nowhere if they don't pass this or that exam. Our educational system is based on a very Western idea that life is a struggle and you'd better measure up. It's survival of the fittest. While there is some truth to this,not as much as people think. Our ancestors didn't develop a constant stress environment. Back then,stress came quickly and was over quickly,it wasn't like the stress of modern education. Stress was originally just a shortterm biological response to danger;however,the constant stress of modern education rarely stops. It's long term,at least ten years and usually more. Recent research has shown that the neurological response to stress is the same response that is found in depression. So,what's the solution? A number have been proposed,including but not limited to the following. _ .Exercise consumes energy that would otherwise build up in the stress response and could cause physical and mental problems. Teach relaxation exercises. Allowing the mind and body to relax cuts off the stress response and reduces the neurological fatigue ,enabling the individual to recover at least somewhat. Pay attention to thinking. Training the stressed student to pay attention to his or her own mind to a point where he or she is sufficiently aware to shut off the stress response when necessary. Of course,there's a logical answer to the problem. Just rearrange our teaching methods to encourage,rather than prevent,the natural curiosity and joy in learning that we are all born with. This would remove the stress and probably cut learning time in half. Question: Which of the following is the best for the blank? Options: A: Try to save energy as much as possible. B: Quite a few children avoid exercise. C: Make sure that kids get exercise. D: Set a few limits to your physical activities.
(Answer)
C