user: (Question)
I'm taking a test and have to guess the right answer to the question after the article. Article: Orcas, or killer whales, are the largest of the dolphins and one of the world's most powerful animals feeding on meat. They feast on marine mammals such as seals, sea lions, and even whales, employing teeth that can be four inches (ten centimeters) long. They are known to grab seals right off the ice. They also eat fish, squid  , and seabirds. Though they often frequent cold, coastal waters, orcas can be found from the polar regions to the Equator  . Killer whales hunt in deadly groups, family groups of up to 40 individuals. There appear to be both permanent and temporary group populations of killer whales. These different groups may hunt different animals and use different techniques to catch them. Permanent groups tend to prefer fish, while temporary groups target marine mammals. All groups use effective, cooperative hunting techniques that some are similar to the behavior of wolf packs. Whales make a wide variety of communicative sounds, and each group has various noises that its members will recognize even at a distance. They use echolocation   to communicate and hunt, making sounds that travel underwater until they meet objects, then reflect back, showing their location, size, and shape. Killer whales are protective of their young, and other adolescent females often assist the mother in caring for them. Mothers give birth every three to ten years, after a 17-month pregnancy. Killer whales are immediately recognizable by their special black-and-white coloring and are the intelligent, trainable stars of many aquarium shows. Killer whales have never been widely hunted by humans. Question: Killer Whales do not feed on   _  . Options: A: seabirds B: seals C: fishes D: seaweeds
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D


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I'm taking a test and have to guess the right answer to the question after the article. Article: Your morning cup of coffee may start to taste even better after a major government study found that frequent coffee drinkers have a lower risk of dying from a variety of diseases, compared with people who drink little or no coffee. The report, published online in The New England Journal of Medicine on Wednesday, analyzed the coffee-drinking habits of more thatn 400,000 men and women from 50 to 71 years old, making it the largest-ever study of the relationship between coffee consumption   and health. Previous   studies have offered conflicting results on the   benefits, or harm associated with regular coffee consumption. While coffee contains caffeine, which may temporarily increase heart rate and blood pressure in some people, coffee also contains hundreds of unique compounds that may do good to health. Further confusing much of the research into coffee is the fact that many coffee drinkers are also smokers, and it has been difficult to untangle the   health effects of coffee and cigarettes. To learn more, researchers from the National Institutes of Health analyzed diet and health information collected from questionnaires filled out by 229,119 men and 173,141 women, who were members of the American Association of Retired Persons (AARP) between 1995 and 1996. They were followed until 2008, by which point 52,000 had died. As expected, the researchers found that the regular coffee drinkers in the group were also more likely to be smokers. They are more red meat and fewer fruits and vegetables, exercised less and drank more alcohol -- all behaviors associated with poor health. But once the researchers were able to separate the risks, the data showed that the more coffee a person consumed, the less likely he or she was to die from a number of health problems, including diabetes, heart disease, respiratory disease, infections and even injuries and accidents. Question: According to the passage, previous studies have shown that   _  . Options: A: drinking coffee has some risk B: drinking coffee is perfectly healthy C: coffee drinkers always live longer D: coffee does more harm to health than cigarettes
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A


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I'm taking a test and have to guess the right answer to the question after the article. Article: Having friends may well keep you healthier and help you deal with stress better. Some studies show that people with close friends have a greater ability to fight disease than people who are alone. Place friendship in the first place. Find the time to be with friends even if it means letting the lawn go unmowed or the dishes unwashed for a while. When you can't get together, use the phone to keep in touch. Open up to close friends. Keeping a deep friendship requires a level of "heartfelt" intimacy  .Don't be afraid to express your inner fears and disappointments. Listen to your friends when they have problems,but offer advice only when it's wanted. Help raise friends' selfesteem when they are sad about a job loss, or other such events. Have different friends for different activities, such as going to the movies,singing in a choir,and joining in a bowling league. Don't wait for a friend to ask for helps. When a friend has the flu,offer to go to the store or drive his or her children to their afterschool activities. Never take a friendship for granted. Like a good marriage,friendship needs care and patience. Become a joiner. Find a group that matches your interests. Talk to strangers. Conversations started in museums, laundry rooms,or bookstores can lead to firm friendship.  _ in an adulteducation course. A classroom is an ideal place to meet others with similar interests. Question: According to the passage,you'd better offer advice to your friends  _  . Options: A: at any moment B: only when they are happy C: only when they want it D: only when you are glad
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assistant: C