An afternoon nap （午睡） is one of the joys of life，although too much napping could signal all is not well.In some cultures，people will have a daily nap-this is fine.The warming comes when people start sleeping during the daytime，when they did not before.There is certainly a good reason to believe that daytime sleepiness-as in the Alzheimer's study-can be a marker of an underlying condition.
For most people，napping during the day is mainly a sign that you are not getting enough sleep at night，says Dr Neil Stanley，a sleep expert. "If you feel sleepy during the day，you should think about taking a nap.That is what the body needs-it doesn't need to be kept awake with caffeine，it needs sleep." The feeling to notice is "sleepiness"，he says，not "tiredness"，which could be more psychological and linked to stress.
So how do you nap well？The key thing，says Stanley，is how long your nap lasts.Choose either a 20- or 90-minute nap. "When you fall asleep，you'll quickly go through the lighter stages of sleep into your first period of deep sleep.You don't want to wake up in deep sleep because that's when you wake and feel worse than you did before." Napping for 20 minutes means you will wake up before you go into deep sleep；napping for 90 minutes means you'll complete a sleep cycle.
Once you factor in the time it takes to fall asleep-some people are better at napping than others but，says Stanley， "a healthy adult will fall asleep in between 5 and 12 minutes"-you can set an alarm，allowing a 30- to 40-minute period for a short nap，and up to two hours for a longer one.
A good time to nap is during the body's natural dip in the afternoon，between 2 pm and 4 pm. "You don't really want to be napping much past thatbecause then you are going to be eating into your night-time sleep，" Stanley says.The point，he stresses，is to get good night-time sleep，which would ensure you probably don't need to nap at all.
（1）What does an afternoon nap indicate for most people？CC
A．Caffeine addiction.
B．Psychological stress.
C．Insufficient night sleep.
D．Potential physical illness.
（2）What is the key to a good nap？AA
A．Duration.
B．Surroundings.
C．Health.
D．Stages.
（3）What does the underlined word "that" in the last paragraph refer to？BB
A．A 30- to 40-minute period.
B．Between 2 pm and 4 pm.
C．Between 5 and 12 minutes.
D．A 20- to 90-minute period.
（4）Which of the following can be the best title for the text？DD
A．Why to phase a nap.
B．When to take a good nap.
C．What to learn from a nap.
D．How to have a successful nap.
【答案】C；A；B；D
【解答】
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發(fā)布：2024/5/27 14:0:0組卷：29引用：2難度：0.5
相似題
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Math departments alone are unlikely to solve this dilemma.Several of the promising calculus reforms were spearheaded by professors outside of math departments.STEM faculty are prioritizing cooperation across disciplines to transform math classes to cultivate a diverse generation of STEM researchers and professionals.
This is not uncharted territory.In 2013，life sciences faculty at the University of California，Los Angeles，developed a two-course sequence that covers classic calculus topics，but also emphasizes their application in a biological context.Creating this course，Mathematics for Life Scientists，wasn't easy.The life sciences faculty involved，none of whom had a joint appointment with the math department，said they turned to designing the course themselves after math faculty rejected their request for cooperation.
In Ohio，Wright State University's Engineering departments also revised math offerings.Rather than changing the content of the calculus course，they focused on preparing students for calculus by emphasizing "engineering motivation for math." The approach enhanced opportunities for students with weaker math backgrounds to succeed in engineering and doubled the average graduation rate of engineering students without reducing the average grade of graduates.Math learning is fundamental to all STEM fields，but the opposite also appears to be true.
（1）What problem is mentioned in paragraph 1？
A．Increasing STEM dropout rate.
B．The reform of calculus courses.
C．Shrinking admission to STEM majors.
D．The shaken belief in the role of calculus.
（2）What does "spearheaded" in paragraph 2 probably mean？
A．challenged
B．evaluated
C．cancelled
D．initiated
（3）What do we know about the calculus course reform according to the text？
A．STEM departments made calculus content easier to improve students' grades.
B．Math departments sought cooperation with STEM counterparts to urge reforms.
C．Placing calculus learning in specific STEM contexts is a workable approach.
D．Removing calculus is the key to increasing graduation rate of STEM students.
（4）What does "the opposite" in the last paragraph refer to？
A．The STEM fields may be the foundation of other science subjects.
B．The STEM fields may be central to making math learning effective.
C．Math learning may set barrier for science study in the STEM fields.
D．Math learning may make way for science study in the STEM fields.發(fā)布：2025/1/1 17:30:2組卷：26引用：3難度：0.5 -
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（1）Why did the author want to have a good appearance when she was young？
A．Because she wanted to follow the example of her friend.
B．Because she wanted to be one of the characters in the book.
C．Because she wanted to get higher scores in the job interviews.
D．Because the successful characters in the books she read were attractive.
（2）Why did the writer refer to her friend's story？
A．To show how beautiful her friend was.
B．To show how important outer beauty is.
C．To show the importance of inner beauty.
D．To show how terrible to be a beautiful girl.
（3）What does the underlined sentence in the third paragraph mean？
A．Surgery is becoming more and more popular.
B．More and more people pay attention to outer beauty.
C．More people can afford the price of doing plastic surgery.
D．The living standard has been improved over the past years.
（4）Which of the following covers the passage best？
A．Inner beauty is the real beauty.
B．How do attractive persons become successful？
C．The key factor to find a good job is being attractive.
D．Plastic surgery is the best way to make a person more beautiful.
（5）What do we know from the passage？
A．If you are too beautiful，all your friends will leave you out of envy.
B．If you have a good appearance，you must get higher scores in the job interviews.
C．Without the TV advertisements，there wouldn't have been a boom in plastic surgery.
D．Those who have good appearances should also develop the beauty in their hearts.發(fā)布：2025/1/1 18:0:1組卷：12引用：2難度：0.6 -
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keyboard
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