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根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
What is a yawn（哈欠） and why do people yawn? A yawn is often associated with a person being tired． People yawn for many reasons including stress, boredom, emotion and overwork．
Have you noticed that yawning seems to be contagious （会传染的）? If one person yawns, this appears to cause another person to yawn．Researchers have found that 40-60% of people who see a picture of someone yawning will yawn themselves．
Some people think that yawning is rude and suggests that you are bored or uninterested．Maybe a yawn is a signal to a group that it’s time to go to sleep, or if someone yawns when they're bored, it may be a sign to change the topic of conversation． Animals of all types yawn．If you have a dog or cat, you've probably seen your pet yawn several times．Even some birds yawn such as cockatiel parrots, Adelie penguins and Emperor penguins．
Some of the scientific explanations of why we yawn claim it is caused by physical needs．One likely explana??tion is that the yawning reflex happens when our blood needs more oxygen．The deep breath helps supply the levels of oxygen in our blood． It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn．
Superstitions about yawning have been around for hundreds of years and can date back to the ancient Greeks．A common superstition says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth． Today most people do not believe these superstitions and know that a yawn is a physical reflex．
A．Did you yawn while reading this article?
B．Yawning is not limited to humans．
C．It will make you lose interest in your work．
D．But this is not always the cause for a yawn．
E．Even reading the word YAWN can make people yawn．
F．However, it doesn't mean that you need rest or relax??ation．
G．Other people believe that yawning is a sign that danger is near．
H．Another common theory is that a yawn helps regulate our body temperature．
查看习题详情和答案>>根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
What is a yawn（哈欠） and why do people yawn? A yawn is often associated with a person being tired． People yawn for many reasons including stress, boredom, emotion and overwork．
Have you noticed that yawning seems to be contagious （会传染的）? If one person yawns, this appears to cause another person to yawn．Researchers have found that 40-60% of people who see a picture of someone yawning will yawn themselves．
Some people think that yawning is rude and suggests that you are bored or uninterested．Maybe a yawn is a signal to a group that it’s time to go to sleep, or if someone yawns when they're bored, it may be a sign to change the topic of conversation． Animals of all types yawn．If you have a dog or cat, you've probably seen your pet yawn several times．Even some birds yawn such as cockatiel parrots, Adelie penguins and Emperor penguins．
Some of the scientific explanations of why we yawn claim it is caused by physical needs．One likely explana??tion is that the yawning reflex happens when our blood needs more oxygen．The deep breath helps supply the levels of oxygen in our blood． It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn．
Superstitions about yawning have been around for hundreds of years and can date back to the ancient Greeks．A common superstition says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth． Today most people do not believe these superstitions and know that a yawn is a physical reflex．
A．Did you yawn while reading this article?
B．Yawning is not limited to humans．
C．It will make you lose interest in your work．
D．But this is not always the cause for a yawn．
E．Even reading the word YAWN can make people yawn．
F．However, it doesn't mean that you need rest or relax??ation．
G．Other people believe that yawning is a sign that danger is near．
H．Another common theory is that a yawn helps regulate our body temperature．
查看习题详情和答案>>根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
What is a yawn(哈欠)and why do people yawn?A yawn is often associated with a person being tired． 1 People yawn for many reasons including stress, boredom, emotion and overwork．
Have you noticed that yawning seems to be contagious(会传染的)?If one person yawns, this appears to cause another person to yawn．Researchers have found that 40－60％ of people who see a picture of someone yawning will yawn themselves． 2
Some people think that yawning is rude and suggests that you are bored or uninterested．Maybe a yawn is a signal to a group that it's time to go to sleep, or if someone yawns when they're bored, it may be a sign to change the topic of conversation． 3 Animals of all types yawn．If you have a dog or cat, you've probably seen your pet yawn several times．Even some birds yawn such as cockatiel parrots, Adelie penguins and Emperor penguins．
Some of the scientific explanations of why we yawn claim it is caused by physical needs．One likely explanation is that the yawning reflex happens when our blood needs more oxygen．The deep breath helps supply the levels of oxygen in our blood． 4 It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn．
Superstitions about yawning have been around for hundreds of years and can date back to the ancient Greeks．A common superstition says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth． 5 Today most people do not believe these superstitions and know that a yawn is a physical reflex．
A．Did you yawn while reading this article?
B．Yawning is not limited to humans．
C．It will make you lose interest in your work．
D．But this is not always the cause for a yawn．
E．Even reading the word YAWN can make people yawn．
F．However, it doesn't mean that you need rest or relaxation．
G．Other people believe that yawning is a sign that danger is near．
H．Another common theory is that a yawn helps regulate our body temperature．
Having one of those days or weeks----when everything seems to annoy you? Even
if you do nothing about it, your bad mood will probably go away after some time. But with a little effort, you can forget it much faster---often within a day or two.
Walk it off
Exercise is the most popular bad-mood buster(破坏者). A person who is in bad mood has low energy and high tension. Taking a fast ten-minute walk, or doing some quick exercises can do wonders towards changing that bad mood.
Tune it out
Listening to your favorite music for a while can also make tension go away quickly, because music starts associations with past positive experiences we’ve had.
Give yourself a pep talk
Stop and listen to what is on your mind. Bad moods are often started by too many negative thoughts. Write them all down on paper; the pessimistic (悲观的) messages you’ve been giving yourself and then give optimistic answers. (“ I still don’t have a job” v.s “ I have two interviews next week.”)
Reduce your stress
Relaxation techniques are wonderful mood-lifters. These include deep breathing, stretching and visualizing (想象)，all of which sound complicated but aren’t. One easy way to visualize: close your eyes and picture a favorite place, such as the beach. Another simple way to against distress is to make a to-do list. One reason for being in a bad mood is feeling you have no choices. By taking control over certain areas, you realize you’re not helpless. You can make changes in your mood and life.
Avoid things that won’t improve your mood
TV may not help much: You need to increase your energy level and stimulate(刺激) your mind -----something that the TV show “Neighbors” won’t do. And before you reach for that piece of cake and coffee, think about how mood and food are linked. Sugar and caffeine(咖啡因) contribute to depressed moods. The better choice? Research shows that carbohydrates, such as potatoes and pasta, produce a calming effect in people who have a desire for them.
65. We learn from the text that it might help rid us of a bad mood________.
A. to do nothing about it B. to take a long walk on the beach
C. to do some exercises with light music D. to talk it to neighbors
66. Why is it suggested that you close your eyes and picture the beach?
A. It is not complicated to do so B. It is an area to be easily controlled
C. It helps beat a bad mood D. It brings us a new technique
67. TV may not improve your mood because _____.
A. it sometimes shows what happens around you
B. it keeps you stay unmoved
C. it reminds you of eating and drinking
D. it produces a calming effect
68. This text most probably appears in _______
A. a book on physical exercises B. a doctor’s handbook
C. a notice D. a magazine