When several different people look at the same person, it is not unusual for each of them to see different things; when you alone observe one behavior or one person at two different times, you may see different things. The following are but some of the factors that lead to these varying perceptions（感知，感觉）: k+s-5#u 

Each person’s perceptions of others are formed by his or her own cultural conditioning, education, and personal experience.

Sometimes perceptions differ because of what we choose to observe and how we deal with what we’ve observed. It is not necessarily true that person’s perception is based on observations of a particular person. Your observations may be totally controlled by some. Your observations may be totally controlled by what others have told you about this person; or you may focus primarily on the situation or role relationship. Most people do not use the same yardstick（尺码） to measure their parents, their friends, and strangers.

Sometimes we see only what we want to see what may be obverse（正面的）to others because of our own needs, desires, or temporary（临时的） emotional states. This is a process known as selective perception. Selective perception is obviously more difficult when contradictory（相反的） information is particularly obvious, but it can be done. We can ignore the stimulus（刺激）—“He’s basically a good boy, so what I saw was not shoplifting（入店行窃）.”  We can reduce the importance of the contradictory information —“All kids get into mischief（顽皮）. Taking a book from the bookstore isn’t such a big deal.” We call change the meaning of the contradictory information—“It wasn’t shoplifting because he was going to pay for it later.”...

Why might the observation of the same person by two people at the same time differ?

       A．Because they are from different family.

       B．Because they have different opinions.

       C．Because their yardsticks are not the same.

       D．Because their thoughts are different. k+s-5#u 

According the passage, our perceptions are formed by ________.

       A．our own cultural conditions, education and experience

       B．our own thoughts, aims and knowledge

       C．the society’s rules, laws and needs

       D．the society’s values, standards and requires

From the passage, we know _____ causes us to think a boy’s shoplifting isn’t serious.

       A．our kindness           B．our experience        

C．the society’s require                             D．selective perception

What does the passage mainly talk about?

       A．It mainly talks about the results of different perceptions.

       B．It mainly talks about the factors that lead to different perceptions. k+s-5#u 

       C．It mainly talks about the kinds of perceptions.

       D．It mainly talks about the yardsticks.

  Our bodies are wonderfully skillful at keeping balance．When the temperature jumps, we sweat to cool down．When our blood pressure falls, our hearts can do something．As it turns out, though, our natural state is always changing．Researchers are finding that everything from blood pressure to brain function changes regularly with the cycles of sun, moon and seasons．And their insights （洞察力） are getting new ways for keeping away such common killers as heart disease and cancer．Only one doctor in 20 has a good knowledge of the scientific use of time in medicine．But according to a new American Medical Association, three out of four are eager to change that．“The field is exploding,” says Michael Smolensky．“Doctors used to look at us like, What spaceship did you get off ? Now they're thirsty to know more．”

    In medical school, most doctors learn that people with chronic  conditions should take their medicine regularly．“It’s a terrible way to treat disease,” says Dr Richard Martin．For example, asthmatics （气喘患者） are most likely to suffer during the night．Yet most patients try to keep a constant level of medicine in their blood day and night, whether by breathing in on an inhaler （吸入器） four times a day or taking a pill each morning and evening．In recent studies, researchers have found that a large mid afternoon dose of a bronchodilator （支气管扩张剂） can be as safe as several small doses, and better for preventing nighttime attacks．

    If the night belongs to asthma, the dawn belongs to high blood pressure and heart disease．Heart attacks are twice as common at 9 a．m．as at 11 p．m．Part of the reason is that our blood pressure falls at night, then rises as we start to work for the day．“Doctors know that,” says Dr．Henry Black of Chicago's Medical Center, “but until now, we haven't been able to do anything about it．” Most blood - pressure drugs provide 18 to 20 hours of relief （减缓）．But because they’re taken in the morning, they're least effective when most needed．“You take your pill at 7 and it's working by 9,” says Dr．William White of the University of Connecticut Health Center “But by that time you've gone through the worst four hours of the day with no protection．” Bedtime medicine would prevent high blood pressure, but it would also push blood pressure to dangerously low levels during the night．

Researchers are finding that _________ ．

    A．heart disease and cancer are the most common killers of human beings

    B．only blood pressure and brain function are decided by cycles of sun, moon and seasons

    C．the functions of human bodies have much to do with nature

    D．any change in human bodies goes with changes in the surroundings

According to the author, it is best for asthmatics to take their medicine _________ ．

    A．at certain time

    B．each morning and evening

    C．when the disease occurs

    D．at midafternoon

Which of the following statements is NOT true?

    A．Doctors know more about illnesses than before．

    B．Doctors in the U．S．used to be thirsty to know more about the new medical field．

    C．The researchers' insights are providing new methods to prevent common killers．

    D．The correct use of time in medicine attracts more attention in medical circle in the U．S．A．

The suggested title for this passage might be _________．

    A．Medicine Is Everything   B．Treatment Is Everything

    C．Timing Is Everything     D．Prevention Is Everything

    Our bodies are wonderfully skillful at keeping balance．When the temperature jumps, we sweat to cool down．When our blood pressure falls, our hearts can do something．As it turns out, though, our natural state is always changing．Researchers are finding that everything from blood pressure to brain function changes regularly with the cycles of sun, moon and seasons．And their insights （洞察力） are getting new ways for keeping away such common killers as heart disease and cancer．Only one doctor in 20 has a good knowledge of the scientific use of time in medicine．But according to a new American Medical Association, three out of four are eager to change that．“The field is exploding,” says Michael Smolensky．“Doctors used to look at us like, What spaceship did you get off ? Now they're thirsty to know more．”

    In medical school, most doctors learn that people with chronic  conditions should take their medicine regularly．“It’s a terrible way to treat disease,” says Dr Richard Martin．For example, asthmatics （气喘患者） are most likely to suffer during the night．Yet most patients try to keep a constant level of medicine in their blood day and night, whether by breathing in on an inhaler （吸入器） four times a day or taking a pill each morning and evening．In recent studies, researchers have found that a large mid afternoon dose of a bronchodilator （支气管扩张剂） can be as safe as several small doses, and better for preventing nighttime attacks．

    If the night belongs to asthma, the dawn belongs to high blood pressure and heart disease．Heart attacks are twice as common at 9 a．m．as at 11 p．m．Part of the reason is that our blood pressure falls at night, then rises as we start to work for the day．“Doctors know that,” says Dr．Henry Black of Chicago's Medical Center, “but until now, we haven't been able to do anything about it．” Most blood - pressure drugs provide 18 to 20 hours of relief （减缓）．But because they’re taken in the morning, they're least effective when most needed．“You take your pill at 7 and it's working by 9,” says Dr．William White of the University of Connecticut Health Center “But by that time you've gone through the worst four hours of the day with no protection．” Bedtime medicine would prevent high blood pressure, but it would also push blood pressure to dangerously low levels during the night．

1.Researchers are finding that _________ ．

    A．heart disease and cancer are the most common killers of human beings

    B．only blood pressure and brain function are decided by cycles of sun, moon and seasons

    C．the functions of human bodies have much to do with nature

    D．any change in human bodies goes with changes in the surroundings

2.According to the author, it is best for asthmatics to take their medicine _________ ．

    A．at certain time

    B．each morning and evening

    C．when the disease occurs

    D．at midafternoon

3.Which of the following statements is NOT true?

    A．Doctors know more about illnesses than before．

    B．Doctors in the U．S．used to be thirsty to know more about the new medical field．

    C．The researchers' insights are providing new methods to prevent common killers．

    D．The correct use of time in medicine attracts more attention in medical circle in the U．S．A．

4.The suggested title for this passage might be _________．

    A．Medicine Is Everything               B．Treatment Is Everything

    C．Timing Is Everything                 D．Prevention Is Everything

              Our bodies are wonderfully skillful at keeping balance．When the temperature jumps, we sweat to cool down．When our blood pressure falls, our hearts can do something．As it turns out, though, our natural state is always changing．Researchers are finding that everything from blood pressure to brain function changes regularly with the cycles of sun, moon and seasons．And their insights （洞察力） are getting new ways for keeping away such common killers as heart disease and cancer．Only one doctor in 20 has a good knowledge of the scientific use of time in medicine．But according to a new American Medical Association, three out of four are eager to change that．“The field is exploding,” says Michael Smolensky．“Doctors used to look at us like, What spaceship did you get off ? Now they're thirsty to know more．”
In medical school, most doctors learn that people with chronic  conditions should take their medicine regularly．“It’s a terrible way to treat disease,” says Dr Richard Martin．For example, asthmatics （气喘患者） are most likely to suffer during the night．Yet most patients try to keep a constant level of medicine in their blood day and night, whether by breathing in on an inhaler （吸入器） four times a day or taking a pill each morning and evening．In recent studies, researchers have found that a large mid afternoon dose of a bronchodilator （支气管扩张剂） can be as safe as several small doses, and better for preventing nighttime attacks．
If the night belongs to asthma, the dawn belongs to high blood pressure and heart disease．Heart attacks are twice as common at 9 a．m．as at 11 p．m．Part of the reason is that our blood pressure falls at night, then rises as we start to work for the day．“Doctors know that,” says Dr．Henry Black of Chicago's Medical Center, “but until now, we haven't been able to do anything about it．” Most blood - pressure drugs provide 18 to 20 hours of relief （减缓）．But because they’re taken in the morning, they're least effective when most needed．“You take your pill at 7 and it's working by 9,” says Dr．William White of the University of Connecticut Health Center “But by that time you've gone through the worst four hours of the day with no protection．” Bedtime medicine would prevent high blood pressure, but it would also push blood pressure to dangerously low levels during the night．
【小题1】Researchers are finding that _________ ．