【正确答案】Experts think that pets are so good for us, physically and emotionally, because their love, loyalty, consistency, and forgiving and nonjudgmental natures offer people great comfort. "A pet is an island of sanity in what appears to be an 'insane' world," noted a New York psychologist who pioneered animal-assisted therapy in the 1950s by using his dog, Jingles, to help treat emotionally disturbed children.
Pets can help us relax and focus our attention away from our problems and worries. Watching fish in an aquarium, or the activity of birds can be very soothing. You have had a bad day at school or office, and you are in a foul mood. You enter your home and there waiting for is your pet dog who is absolutely overjoyed to see you. Can you help but respond to the joyful barks, loving licks and eyes full of admiration that say "you are the best master in the world"? There is absolutely no better way to lift your spirits.
Pets can help alleviate feelings of loneliness and isolation. The elderly or those who are sick in bed, tend to feel isolated, in this situation, having a pet at their side keeps them company and makes them feel better. Everyone needs to feel needed and have someone to care for. Many elderly citizens or persons living alone will tell you their pet gives them a reason for living.
Pets also help their owners adjust to serious illness and death. Children often turn to their pet for comfort if a friend or family member dies or leaves the family. Grieving adults who did not have a close source of human support were also found to have less depression if they had a pet.
Having a pet can help us be more active. We may not only get more exercise from walking a dog, but we also increase our activity through feeding, grooming and otherwise caring for our pet.

【正确答案】Medical researchers need to understand health problems before they can develop ways to treat them. Some diseases and health problems involve processes that can only be studied in a living organism. Animals are necessary to medical research when it is impractical or unethical to use humans.
Animals make good research subjects for a variety of reasons. Animals are biologically similar to humans. They are susceptible to many of the same health problems, and they have short life-cycles so they can easily be studied throughout their whole life-span or across several generations. In addition, scientists can easily control the environment around the animal (diet, temperature, lighting, etc.), which would be difficult to do with people. However, the most important reason why animals are used is that it would be wrong to deliberately expose human beings to health risks in order to observe the course of a disease.
A few experiments do involve painful procedures because pain is being studied or drugs would interfere with the research. In such cases, scientists are morally and legally obligated to ensure that the procedures are necessary.
Those who work with research animals — scientists, veterinarians, and animal care technicians should care about the animals. They should recognize that using animals in research is a privilege that carries with it the responsibility to treat those animals humanely. Furthermore, pain and distress can literally change how the body functions, so it is also in the best interest of science to provide good animal care.

【正确答案】Generally, such measures could be taken to protect animals:
The government should enact and enforce the laws of animal protection. Catching and killing rare species is prohibited severely. Heavy fin and even imprisonment is the 0nly solution to the problem.
The government should set up large-scale national zoos and some reserves for wild animals, where all the native species of animals can live freely and be protected against harm.
People should be educated to understand the importance of animal conservation. And measures could he taken to shift those hunters to other jobs.