Read the following article and select the best answer. Article: As rain begins to fall from the clouds, it is very pure. However, as it falls through the air it dissolves some of the gases in the air. It also collects bits of dust and microbes that are floating in the air. When the rain reaches the ground it begins to pick up more dust and dirt. Many kinds of mineral substances dissolve in the water. Sand and mud cannot dissolve in water. Since water is so important to us, it is very important that the water we use should be clean. Otherwise, we might get some of the diseases that are carried by water. Many microbes are harmful. They are so small that we cannot see them. These microbes must be removed or killed before the water is suitable for drinking. For example, microbes of diseases like cholera live well in water. If the water supply is not clean, people who drink this water may get these diseases. Thus, to provide people with clean water, the government purifies the water. Purification is a long process and includes three stages: storing, purifying and distributing . The first stage is storing. Man-made lakes are used for this purpose. Water from the rains, other lakes, streams and rivers is collected in the lakes. This water is usually dirty and muddy. In the second stage, water from the man-made lakes is filtered in a special pond. Stones, sand and other unwanted tiny things are caught in it. After that, tiny microbes are still present in the water. These microbes are removed by "airing" the water and by adding a chemical substance called chlorine to the water. This kills all the microbes in the water. After this, the water can be safely used for drinking. The third stage is the distribution of the purified water to homes, hospitals, offices, factories and other places. This is done through a network of pipes of various sizes. These pipes must be made of a suitable material. Question: What is the purpose of adding chlorine to the water? - to air the water - to catch tiny things - to kill tiny microbes - to remove harmful gases
to kill tiny microbes

Read the following article and select the best answer. Article: Science Daily--Kids may roll their eyes when their mothers asks them about their school day, but answering her may actually help them learn. New research from Vanderbilt University reveals that children learn the solution to a problem best when they explain it to their mom. "We knew that children learn well with their moms or with a peer, but we did not know if that was because they were getting feedback and help," Bethany Rittle-Johnson, the study's lead author and assistant professor of psychology at Vanderbilt's Peabody College of education and human development, said. "In this study, we just had the children's mothers listen, without providing any assistance. We've found that by simply listening, a mother helps her child learn." Rittle-Johnson believes the new finding can help parents better assist their children with their schoolwork, even when they are not sure of the answer themselves. Although the researchers used children and their mothers in the study, they believe the same results will hold true whether the person is the child's father, grandparent, or other familiar persons. "The basic idea is that it is really effective to try to get kids to explain things themselves instead of just telling them the answer," she said. "Explaining their reasoning, to a parent or perhaps to other people they know, will help them understand the problem and apply what they have learned to other situations. We saw that this simple act of listening by mom made a difference in the quality of the child's explanations and how well they could solve more difficult problems later on. Question: Which of the following best gives the main idea of the passage? - Children learn better when their mom is hearing their explaining. - Children learn better if they find the solution to a problem themselves. - Parents should not provide any assistance to their children's schoolwork. - A mom should listen more to their children when they have problems at school.
Children learn better when their mom is hearing their explaining.

Q: Read the following article and select the best answer. Article: Guide to Stockholm University Library Our library offers different types of studying places and provides a good studying environment. Zones The library is divided into different zones. The upper floor is a quiet zone with over a thousand places for silent reading, and places where you can sit and work with your own computer. The reading places consist mostly of tables and chairs. The ground floor is the zone where you can talk. Here you can find sofas and armchairs for group work. Computers You can use your own computer to connect to the wi-fi specially prepared for notebook computers; you can also use library computers, which contain the most commonly used applications, such as Microsoft Office. They are situated in the area known as the Experimental Field on the ground floor. Group-study Places If you want to discuss freely without disturbing others, you can book a study room or sit at a table on the ground floor. Some study rooms are for 2-3 people and others can hold up to 6-8 people. All rooms are marked on the library maps. There are 40 group-study rooms that must be booked via the website. To book, you need an active University account and a valid University card. You can use a room three hours per day, nine hours at most per week. Storage of study material The library has lockers for students to store course literature. When you have obtained at least 40 credits , you may rent a locker and pay 400 SEK for a year's rental period. Rules to be followed Mobile phone conversations are not permitted anywhere in the library. Keep your phone on silent as if you were in a lecture and exit the library if you need to receive calls. Please note that food and fruit are forbidden in the library, but you are allowed to have drinks and sweets with you. Question: A student can rent a locker in the library if he _ . - can afford the rental fee - attends certain courses - has nowhere to put his books. - has earned the required credits
A: has earned the required credits

(Question)
Read the following article and select the best answer. Article: Women are on their way to holding more than half of all American jobs. The latest government report shows that their share of non-farm jobs nearly reached fifty percent in September, 2009. The job market continues to suffer the effects of last year's financial crash. On the one hand more women have entered the labor market over the years, and on the other hand the economic recession has hit men harder than women. In October the unemployment rate for men was almost 11% compared to 8% for women. Industries that traditionally use lots of men have suffered deep cuts. For example, manufacturing and building lost more jobs last month. But health care and temporary employment services have had job growth. Both of those industries employ high percentages of women. Thirty years ago, women earned sixty-two cents for every dollar that men earned. Now, for those who usually work full time, women earn about eighty percent of what men earn. And a recent study from the University of California, Davis, reveals that women hold fifty-one percent of well-paid management and professional jobs. Yet the study also shows that men still hold about nine out of every ten top positions at most companies. The results have remained largely unchanged for five years. Also, a new research paper in the journalSex Roleslooks at the experiences of women who are the main earners in their families. Rebecca Meisenbach at the University of Missouri in Columbia interviewed fifteen women. She found that they all value their independence and many enjoy having the power of control, though not all want it. But they even feel more pressure and worry. That is partly because of cultural expectations that working women should still take care of the children. Also, men who are not the main earners may feel threatened. Question: Which of the following is a reason why women have a larger share of jobs? - Women workers are paid less than men. - More women now have higher education than men. - The economic recession has affected men more than women. - Industries that traditionally use lots of men now need more women.
(Answer)
The economic recession has affected men more than women.