Q: Read the article and select the best answer. Article: Secondhand smoke isn't just a health threat to people.It can also hurt dogs and cats,veterinarians say. According to the Centers for Disease Control and Prevention,more than 126 million Americans who don't smoke are exposed to secondhand smoke in their homes,vehicles,workplaces,and public places.This exposure causes thousands of lung cancer and heart disease deaths among nonsmokers every year,according to the California Environmental Protection Agency. "Making the leap from the effects of secondhand smoke on humans to their effects on pets isn't a big one," says veterinarian Carolynn MacAllister of Oklahoma State University. "There have been a number of scientific papers recently that have reported the significant health threat secondhand smoke poses to pets," MacAllister said."Secondhand smoke has been associated with oral cancer and lymphoma in cats,lung and nasal cancer in dogs,as well as lung cancer in birds." Studies have also shown that dogs living in a smoking household are susceptible to cancers of the nose and sinus area,particularly if they are a long-nosed breed,because their noses have a greater surface area that is exposed to carcinogens and a greater area for them to accumulate.Dogs affected with nasal cancer normally don't survive for more than one year. "Short and medium-nosed dogs are more susceptible to lung cancer,because their shorter nasal passage aren't as effective at accumulating the inhaled secondhand smoke carcinogens," MacAllister said."This results in more carcinogens reaching the lungs." Birds are also at risk for lung cancer,as well as pneumonia,because their respiratory systems are hypersensitive to any type of air pollutant. To help prevent animals from being adversely affected by smoking,pet owners who smoke should have a designated smoking area that is separated from the home or stop smoking altogether,MacAllister said. Question: What can be suggested according to the passage? Options: A: Smokers can smoke anywhere. B: Smokers can smoke at any time. C: Smokers should smoke in the designated place. D: Smokers must give up smoking at once.
A: C

Q: Read the article and select the best answer. Article: Dear Editor, I'm now busy in preparing for the Postgraduate Entrance Exam. A few days ago, I happened to see some new guidebooks for those who want to take next year's exam. With too many hopes and without taking it into too much consideration, I bought several that were written by some known for helping candidates for master's degrees. What made me really angry was the starting discovery that the contents of those books were almost exactly the same as some I had bought before. There were only superficial changes in their covers, with more attractive new titles and better designs. The contents were the same. People say that the publishing industry is in a state of chaos these days but I used to be doubtful abut that. I was of the opinion that only people of noble character, prestige , and exceptional talent would produce books for higher education. But these editors are caring little about their readers. I hope that authors and publishing houses will be more responsible for their readers. Don't destroy the image that you have with your readers. Question: The writer bought some guidebooks in order to _ . Options: A: write an essay on guidebooks B: prepare for the entrance exam C: give his students a lecture D: send them to his good friends
A: B

Q: Read the article and select the best answer. Article: Al Ossinger,an experienced mountain guide,knew it was time to leave Longs Peak in Colorado's Rocky Mountain National Park,and get off'quickly.The sky had turned threatening dark,and his ice ax at times gave out upset sounds.Suddenly,as Ossinger was crossing a large mass of rock,both hands pressed against it for balance,there was a roar,a flash of light and an electric current charged through his arms. "In that second. I thought 1 was finished,"he said,"Then I realized 1 was still there--the jolt hadn't knocked me off.My body and legs were all right,but my arms were paralyzed from the shoulder down.''Fortunately Ossinger was able to continue down and soon the feeling began to return to his shoulders,upper arms,and,two hours later,his fingertips.Ossinger was a lucky man. A single stroke of lightning,which is usually three to four miles long,travels at speeds of up to 100,000 miles per second.In a single flash,it can carry 100 million volts of electricity and reach a temperature of 55,000 degrees Fahrenheit,five times hotter than the surface of the sun.During its brief life span,lightning carries enough energy to power a 100-watt light bulb for as long as three months.If you find yourself unlucky enough to be near lightning's path,you could suffer a direct hit,sending electrical current though your body for some 5 00 milli-seconds.Because of the short duration,severe burns aren't common and the resulting burns are usually superficial . According to the national Weather Service,more people have been killed by lightning in the United States during the past 30 years,an average of 87 a year-than by either tornadoes or hurricanes,484 people were injured in 1994 alone.These"swords from the sky" are also responsible for an estimated$100 million to$300 million of property damage a year.During the 1980s an average of 5502 wildfires a year were sparked by lightning on national forest lands alone. Earth is struck by at 1east 100 of these flashes every second-more than 8.6 million strikes a day.For all its destructive... Question: Electrical lightning is called"swords from the sky"to mean _ . Options: A: it looks 1ike swords B: it can kill people C: it is sent by God D: it comes naturally
A: B

Q: Read the article and select the best answer. Article: "If you run for more than five minutes at any time, you might need a pair of running shoes." Advises Stephen Pribut, a US sports expert. Running shoes are highly technical footwear. The provide stability while bearing up to three times the wearer's body weight. But it's not easy to find the right pair. Finding the right running shoes is something of an art, or a science and a feel. The science part begins with the shape of the arch of your foot, which anyone can find out at home with this quick experiment: Put your foot in water and place it on a piece of brown paper. If you see a "C" shape on the paper when you remove your foot, you have a rare high arch. If the shape looks more like a rectangle, that means you have flat feet. See something in between? That's a normal arch. Conveniently for shoppers, shoe companies nowadays divide their shoes in three categories: neutral ( for high arches), stability ( for normal or low arches) and motion control (for flat arches). So you'll know which type suits you. At this point, most people would just grab an appealing shoe and try it on, But professionals would do a few quality-control tests. First, you bend the shoe toe to heel to see where it bends. If it's not at the forefoot---where the foot actually be bends, be afraid. Then you grip both ends and twist in opposite directions. If you can twist it like a tower, it means there's zero support. Finally, you squeeze he heel in both directions. A stable heel won't _ . Now you need to check the mold that shapes the inside of the shoe: whether its wide or narrow in the mid-foot, how it sits on the heel and how roomy the toe box is. It's wise to make the shoe purchase in the late afternoon, to allow for any swelling that your feet do throughout the day. Toes also decide sizing choices. The rule is that you need a finger's width from your longest toe (whether that's your big one or not) to the end of the shoe. Question: If the arch of your foot look like a "C" shape, you have _ . Options: A: a normal arch B: a high arch C: a flat arch D: a low arch
A: B