Read the following article and select the best answer. Article: If your cellphone suddenly stops working, don't blame the service provider.The malfunction might well have been caused by something bigger -- a solar storm.Experts expect that Earth will see more solar activity in the near future.The malfunction of electronic devices will just one of the effects. Sunspots serve as an indicator of the sun's activity.For the past two years, sunspots have mostly been missing.Their absence, the most prolonged in nearly 100 years, has taken even seasoned sun watchers by surprise. When the number of sunspots drops at the end of each 11-year cycle, solar storms die down and all become much calmer. This "solar minimum" doesn't last long. Within a year, sunspots and solar storms begin to build toward a new crescendo, the next solar maximum. What's special about this latest cycle is that the sun is having trouble starting the next solar cycle. The sun began to calm down in late 2007, so no one expected many sunspots in 2008. They should return in 2010. Scientists have predicted that the next solar cycle could be the most active on record: more sunspots and more solar storms. However, sunspots are mostly missing now. Since the earth is in close contact with the sun, strong solar activities can bring trouble to our life. People of the 21st century rely on high-tech systems for the basics of daily life. Air travel and radio communications can be affected by strong solar activities. A big solar storm could cause 20 times more economic damage than Hurricane Katrina. What the sun will do next is beyond our ability to predict. Most astronomers think that the solar cycle will go on but at low level. However, there is also evidence that the sun is losing its ability to produce sunspots. By 2015, they could be gone altogether. Question: Which statement does the text lead you to believe? - Solar activities do no harm to our daily life. - Hurricane Katrina is also a type of solar storms. - It's difficult to predict sunspots. - From now on there' re no sunspots.
It's difficult to predict sunspots.

Read the following article and select the best answer. Article: Everyone may all have the experience of feeling anxious and stressed when having a rough day or having some troubles. Different people may choose different ways to deal with it, and for most people a break for a 10-minute walk may be quite useful.www.zxxk.com Anyway, here is another way around: to get a piece of chewing gum, and chew it. According to a Swinburne University of Technology study, gum-chewing has been found to "relieve anxiety, improve alertness and reduce stress among individuals in a laboratory setting." Some may argue that a laboratory is not the same as an office. But check out the conditions of the study: individuals were monitored while performing "a group of 'multi-tasking' activities." Doesn't it sound like the situation in the office?www.zxxk.com Here's a summary of some of the study's findings: Gum chewers showed a reduction in anxiety as compared to non-gum chewers by nearly 17 percent during mild stress and nearly 10 percent in appropriate stress. Gum chewers showed improvement in alertness over non-gum chewers by nearly 19 percent during mild stress and 8 percent in moderate stress. Improved Performance: Chewing gum resulted in a big improvement in overall performance on multi-tasking activities. Although these aren't major improvements, every little bit works and chewing a piece of gum is a lot quicker and easier than slipping outside for a 10-minute walk. So, how does gum work this magic? In part it does so by lowering the level of cortisol --a steroid hormone that is released in response to stress in your system. A few words of advice before you reach for the gum: don't crack your gum, and be sure to chew it with your mouth closed. In fact, I'd say keep the gum out of meetings, because it really looks impolite to others around you. Question: From the study in the text we know that _ . - gum chewers may lack alertness - gum chewers tend to be less stressed - gum chewers can finish many jobs perfectly - gum chewers can reduce their anxiety and anger easily
gum chewers tend to be less stressed

Read the following article and select the best answer. Article: Mapping Your World Different forms of maps are appearing.They allow independent travelers to get local knowledge of places they are visiting, from the official to the unusual.Meanwhile, hi-tech developments are creating new ways for us to map the world.Here are two of our favorites: Green Maps Green Maps allows people to share with the world their knowledge of environmentally friendly places and attractions in the local areas.Users add information with a set of icons , making it easy to read any map, whatever the nationalities of those who produce it.At present there are over five hundred map projects being developed in 54 countries.Green Maps' advertised idea is "think global, map local".It is a wonderful way of gaining all sorts of information of a place, ranging from community gardens to good places of birdwatching. Green Maps is not specifically intended for travelers.Not all of its maps are online, so it may be necessary for some users to communicate with the producers through the Green Maps website. Maps Mashups Many people use online maps developed by Google, but not many know about the mashups of them.Working in a similar way to Green Maps, Map Mashups allows people to add icons of their own to existing maps to express a certain topic.The mashups is so called because it combines all the knowledge you could ever need.It ranges from the extremely useful, such as where all the World Heritage Sites are, to the most bizarre ,such as where America's drunkest cities are.With the mashups added to the basic Google Maps, a multi-layered map can be created. Question: According to the passage, which of the following is a characteristic of Green Maps? - Introducing local attractions with icons - Aiming at environmental protection - Offering advice to independent travelers. - Collecting icons worldwide for local maps.
Introducing local attractions with icons