Read the article and select the best answer. Article: We use an average of 158 liters of water a day in Britain, for which we pay a bargain price of 28p a liter, but much of this is just cash down the drain, according to water companies. Most are campaigning to cut the amount we use. And the frontline weapon in their campaign is the water meter . They want us all to have one and one company is seeking powers to make this compulsory. The Government is anxious for us to use less water, too. Elliot Morley, the Environment Minister, says he is impressed by the savings when a meter is installed. In most homes, consumption drops by 20 percent. He also thinks consumers get a good deal from meters. He said, "Most people would find that they would either be exactly the same or better off with water meters and it is a fairer way of paying for water." At present, only 25% of households have meters and most of those are in East Anglia. They are installed by water companies, and households then have about PS43 added to each bill to cover the cost of installing and reading the meter. Barrie Clarke, a spokesman for Water UK, said, "We want everyone to be more water wise--to think about the amount of water they use. But with our climate change and different weather patterns, over time it will make economic and environmental sense to think how we use water. This may mean meters." Mr. Clarke believes the easiest way to save water is to use less in the garden. In one hour, a sprinkler uses the same amount of water as the average family of four uses in a day--about 632 liters. He said that gardeners should water in the evening so that it dose not _ in the heat of the day and that every household should have a water butt to collect rainwater for use in the garden. Question: How many liters of water does an average family of four use in a day after installing a meter in Britain? Options: A: about 126 liters B: about 158 liters C: about 506 liters D: about 632 liters
C

(Question)
Read the article and select the best answer. Article: If you are sending a text, watching the TV or listening to the radio, you may want to stop and give this your full attention. Multi-tasking shrinks the brain, research suggests. A study found that men and women who frequently used several types of technology at the same time had less grey matter in a key part of the brain. University of Sussex researchers said, "Simultaneously using mobile phones, laptops and other media devices could be changing the structure of our brains." The finding follows research which has linked multi-tasking with a shortened attention span, depression, anxiety and lower grades at school. The researchers began by asking 75 healthy men and women how often they divided their attention between different types of technology. This could mean sending a text message while listening to music and checking email, or speaking on the phone while watching TV and surfing the web. The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulate cortex (ACC). The findings held even when differences in personality were taken into account. The study, published in the journal PLOS ONE, is the first to make a link between multi-tasking and the structure of the brain. Researcher Kep Kee Loh said, "Media multi-tasking is becoming more common in our lives today and there is increasing concern about its impacts on our cognition and social-emotional well-being." He added that more research is needed to prove that multi-tasking shrinks the brain. This is because it is also possible that people with less grey matter in the ACC are more drawn to using lots of small devices simultaneously. Scientists have previously demonstrated brain structure can be changed on prolonged exposure to new environments and experience. Other studies have shown that training -- such as learning to juggle or taxi drivers learning the map of London -- can increase grey-matter densities in certain parts. Experts have also warned of the harmful impact technology can have on... Question: Which of the following is NOT mentioned in the passage? Options: A: What multi-tasking is probably linked with. B: How researchers draw inferences about multi-tasking. C: How different health conditions affect brain structure. D: Significance and limits of the research from University of Sussex .
(Answer)
C

Question: Read the article and select the best answer. Article: Dozens of school districts around the country have been looking at these studies and are considering ways to adjust their class schedules. Eric Peterson is head of St. George's School, a private boarding school for grades 9-12 in the northeastern state of Rhode Island. After looking at the medical research on adolescent sleep needs and observing students in his own school, Peterson consulted with Dr. Judy Owen, a famous pediatrician and sleep expert. Armed with what he considered to be convincing data, Peterson decided to change his school's start time from 8:00 am to 8:30 am on a trial basis to see if a 30-minute change would make a difference. He was surprised by the results. "What was really astonishing was how many benefits and how significant the benefits were," he says. "In the research itself, we saw just over a 50 percent decrease in health-center admissions for fatigue, or fatigue-related illness, or rest requests. We saw almost a 35 percent decrease in first-period lateness. Students reported that they were more attentive. They were less sleepy during the day." And, according to Dr. Patricia Moss, assistant dean for Academic Affairs at St. George's School, students weren't the only ones reporting better results in the classroom. She says virtually all the teachers almost immediately noticed much more concentrated in the classroom, and there was definitely a more positive mood all around. "Kids were happier to be there at 8:30 than they were at 8:00," she says. "So our experience across the total spectrum was, universally, extremely positive and surprisingly so." Headmaster Peterson says there was another unexpected area of change when the school changed its start time. "We saw probably a greater than 30 percent increase in student attendance at breakfast, and of the food that they were eating. We ate more than doubled the amount of milk, eggs, fruit and cereal. So it was quality breakfast foods that the kids were eating. So they were better fueled as well as better rested." Ross and Peterson... Question: The research conducted by Eric Peterson mainly focused on _ . Options: A: the later public school start time B: the change of class schedule C: adolescent sleep requirements D: the changes in school system
Answer:
C