Yawning sends out certain messages---either “Oh, this movie is boring”or I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is so overheated?
A new study, led by a research team of Princeton University, has indicated that yawning could be the brain’s natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily.com.
The research team did an experiment on 160 people , 80 in summer and 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.
When people yawn, their jaw is also stretched, which increases blood flow and may also help cool the brain.
The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawn. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.
However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.
According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.The purpose of the experiment is ________.
| A．to prove people yawn in winter and in summer equally. |
| B．to indicate brain can regulate temperature naturally |
| C．to find the frequency of people’s yawning |
| D．to show the real reason why people yawn |
The information we get from Paragraph 5 and 6 is that_______
| A．longer outdoor summertime results in more yawns. |
| B．yawning frequency changes with outdoor time |
| C．yawning frequency increases with outdoor time |
| D．longer outdoor wintertime leads to fewer yawns |
According to the text, people yawn more often________.
| A．when the air temperature is lower outside the body |
| B．when the hot air breathed in makes the brain hotter |
| C．when the air temperature is higher than the body |
| D．when the air temperature is equal to the body. |
What could be the best title for the text?
| A．Yawning is a Sign of Brain Disease |
| B．Yawning Carries Some Information |
| C．Yawning Benefits Your Body |
| D．Yawning Cools Your Brain |
CANYOUIMAGINEHOWHARDITWOULDBETOREADSENTENCESLIKETHIS? Every one of us gets so used to punctuation marks that not many of us give them a second thought. Actually, the ancient Greeks wrote this way. The lack of punctuation marks probably didn’t bother good readers, though. As they read, they just put pauses where they fit best. Also at this time, sentences switched directions. A sentence read from left to right. The next one read right to left, and then left to right again, etc. The ancient Romans sometimes punctuated like this: They • put • something • that • can • separate • words • in • a • sentence. The word punctuation actually comes from this idea and the Latin word punctum, which means a dot.
When the 5th century arrived, there were just two punctuation marks: spaces and points. The spaces separated words while the points showed pauses in reading. Then in the 13th century, a printer named Aldus Manutius tried to standardize punctuation. He always used a period for a complete stop at the end of a sentence. He used a slash (/) to indicate a short pause. Over time, that slash was shortened and curled, and it became the modern comma (逗号).
Since that time, other marks have enlarged the punctuation family. The exclamation mark (感叹号) comes from the Latin word io. It means “exclamation of joy.” The question mark originally started out as the Latin word questio, meaning question. Eventually, scholars put it at the end of a sentence to show a question.
Punctuation even keeps changing nowadays. New marks are coming into existence, and old punctuation marks are used in new ways. Take for example the “interrobang”. This 1962 invention combines the question mark and exclamation mark for times when writers want both. For example, “She did what?” or “How much did you pay for that dress?” Obviously, the interrobang is not widely used or recognized yet, but its invention shows that English is not yet finished with its punctuation.From the first paragraph, we can know that _______.
| A．good readers had trouble reading without punctuation marks |
| B．a sentence always read from left to right in ancient Greece |
| C．ancient Greeks switched the direction of punctuation marks |
| D．the use of punctuation marks can date back to ancient times |
The passage is developed _______.
| A．by time | B．by space |
| C．by comparison | D．by importance |
We can learn from the passage that _______.
| A．ancient Romans didn’t use any punctuation marks |
| B．exclamation and question marks came from Latin |
| C．spaces and slashes were already used before the 5th century |
| D．Aldus Manutius first started to use commas |
What can be concluded from the last paragraph?
| A．The combination of two marks will not work. |
| B．It takes time for people to accept new punctuation marks. |
| C．Old punctuation marks need to be standardized. |
| D．Punctuation marks are still changing today. |
To most people, noise pollution is a jet flying over their head. For one Spanish woman, it is a neighbor playing the piano. The woman has taken her neighbor to court. Now she wants to send her neighbor to prison for over seven years on the charges of psychological damage and noise pollution.
In a country known for its noisiness, the case has raised eyebrows. Neighbors often complain about street noise in Spain, but people seeking prison time for someone practicing the piano is unheard of. At the trial, Sonia Bosom says she has been suffering noise pollution up to now due to the practice sessions of Laia Martin, who lives below her. Martin, 27, didn’t admit that she played at home that often, saying she took regular classes in other towns and mostly practiced at home on the weekends.
On the first day of the trial, the newspaper reported that Bosom told the court she now hated pianos so much that she couldn’t even stand seeing them in a film.
Bosom says years of hearing constant playing has caused her “psychological injury”. Medical reports show she has suffered from a variety of problems, including insomnia (失眠), anxiety, and panic attacks.
She says tests by local authorities have found that the sound levels made by the piano are up to 10 decibels (分贝) higher than the limit. City authorities have asked the family several times to either stop the piano playing or soundproof (隔音) the room. The family told the court they carried out soundproofing work twice but the complaints continued.
The court hasn’t made a final decision. A spokeswoman says the trial will end before May.Bosom wants to send Martin to prison because _______.
| A．Martin’s playing the piano damaged her health |
| B．Bosom suffered from heart attack |
| C．Martin refused to take regular classes in other towns |
| D．Martin flew a jet over her head |
How did Laia Martin respond to the complaints?
| A．She stopped playing the piano. |
| B．She soundproofed the room. |
| C．She didn’t admit she played at home. |
| D．She took her neighbor to court. |
Which of the following may probably be the best title for the passage?
| A．A 7-year Sentence Caused by the Piano |
| B．Pianist Charged with Noise Pollution |
| C．Health Problems of a Spanish Woman |
| D．Actions Against Noise by Local Authority |
How do you know if your home is an easy aim for thefts ? Around the holidays, many families don't consider taking proper measures to prevent their homes from suffering holiday thefts. With just a few simple steps, you can better make sure of the safety of your home during all of the holiday celebrations. Here are a few tips for making it difficult to tell you are away from home.
● Either have a trusted neighbor pick up your mail and newspapers, or tell your mailperson to hold your mail until you return. Nothing says "Hey, we are not home!" like when your postbox is filled with all kinds of mails and you have many different newspapers in your driveway.
● Set several different lights in your house on random timers (随机定时器). Don't leave your outdoor lights on all the time. Instead, put your outside lights on timers to be on during the nights. If an outdoor light remains on for days at a time, it means that nobody is home to turn it off.
● If you have pets that you are not taking with you on vacation, leave them with a friend, rather than having someone come into your house every day to take care of them. When thefts see a neighbor or friend entering your house every day, they will know you are not home.
● Close all your curtains when you leave town. This is effective to deter possible thefts, as no one can see what is in your house. If they don't know what there is to take, then the risk is even greater for them to break in.
● This article just has suggested a few tips to help you keep your house safe while you are on holiday. Nothing can truly protect your home unless you have it monitored by a professional home security system.What is the main idea of the passage?
| A．to tell you to have your neighbor go to your house to take care of your pet. |
| B．to let the outdoor lights on all the time. |
| C．to tell us many families suffering from the thefts while they are on holiday. |
| D．to tell us how to prevent the thefts around the holidays. |
Most of the tips mentioned in the text seem to _____.
| A．be very popular with families |
| B．have no effect on preventing thefts |
| C．give a false impression on thefts |
| D．be a little hard to be brought into effect |
The underlined word "deter" probably means "_____".
| A．discover | B．discourage |
| C．surprise | D．attract |
Elizabeth Freeman was born about 1742 to African American parents who were slaves. At the age of six months she was acquired, along with her sister, by John Ashley, a wealthy Massachusetts slaveholders. She became known as Mumbet or Mum Bett.
For nearly 30 years Mumbet served the Ashley family. One day, Ashleys wife tried to strike Mumbets sister with a spade. Mumbet protected her sister and took the blow instead. Furious(狂怒的), she left the house and refused to come back. When the Ashleys tried to make her return, Mumbet consulted a lawyer, Theodore Sedgewick. With his help, Mumbet sued(起诉) for her freedom.
While serving the Ashleys, Mumbet had listened to many discussions of the new Massachusetts constitution. If the constitution said that all people were free and equal, then she thought it should apply to her. Eventually, Mumbet won her freedom---- the first slave in Massachusetts to do so under the new constitution.
Strangely enough, after the trial, the Ashleys asked Mumbet to come back and work for them as a paid employee. She declined and instead went to work for Segdewick. Mumbet died in 1829, but her legacy lived on in her many descendants(后裔). One of her great-grandchildren was W.E.B. Du Bois, one of the founder of the NAACP, and an important writer and spokesperson for African American civil rights.
Mumbets tombstone still stands in the Massachusetts cemetery where she was buried. It reads, in part: She was born a slave and remained a slave and remained a slave for nearly thirty years. She could neither read nor write, yet in her own sphere she had no superior or equal.What do we know about Mumbet according to Paragraph 1?
| A．She was born a slave |
| B．She was a slaveholder |
| C．She had a famous sister |
| D．She was born into a rich family |
What did Mumbet learn from discussions about the new consititution?
| A．She should always obey her owners’ orders |
| B．How to apply for a job |
| C．How to be a good servant |
| D．She should be as free and equal as whites |
What did Mumbet do after the trial?
| A．She chose to work for a lawyer |
| B．She found the NAACP |
| C．She continued to serve the Ashleys |
| D．She went to live with her grandchildren |
What is the test mainly about?
| A．A story of a famous writer and spokesperson |
| B．The friendship between a lawyer and a slave |
| C．A trial that shocked the whole world |
| D．The life of a brave African American woman |
When I was 13, my bedroom walls were covered with posters of the Monkees and Beatles. I wrote fan letters and daydreamed about meeting the objects of my affections. I begged my parents to attend every rock concert and watch every TV show featuring my favorite celebrities (名人) ; my friends and I discussed for hours all the things we would say and do when we met our favorite movie stars and pop singers. I drove my mother crazy! But after a few years, my obsession (迷恋) stars faded as I matured and gained the confidence to socialize with "real" boys.
In the 35 years since I was a teenager, celebrity worship (崇拜) has increased among teens due to the explosion of television celebrity gossip shows, and instant access to celebrity news on the Internet. It's no wonder that many teens are obsessed with stars when news programs often are filled with entertainment stories and the lives of celebrities.
Celebrity worship syndrome (综合征) is now considered a personality disorder. While it is normal for teenagers to follow the lives of their favorite stars, parents should try to monitor everything their child finds interesting. Parents should take action if they suspect a teen is too obsessed with celebrities and showing little interest in school or withdrawing from the family. When teens talk a lot about celebrities and view them as just means of entertainment, this is considered normal celebrity worship. However, when a teenager is obsessed with a star and often expresses a desire to have a close personal relationship with a celebrity or feels they have a special connection to a star, this may be the time for concern.
Recent studies have shown that teens who develop an unhealthy obsession with celebrities often suffer from low self confidence and depression. Teens who are overly obsessed with stars often have damaged relationships with their parents.We learn from the second paragraph that ____.
| A．teens today are not so obsessed with celebrities |
| B．the author is surprised at celebrity worship |
| C．the media greatly contributes to celebrity worship today |
| D．celebrities expose their lives too much |
Parents should become concerned when their children ____.
| A．talk a lot about celebrities with others |
| B．put up celebrity posters in their bedrooms |
| C．ask to go to their favorite star's concert |
| D．desire a close personal relationship with their favorite star |
The last paragraph implies that ____.
| A．parents should not care too much about a child's celebrity worship |
| B．children can normally get out of celebrity worship when they are older |
| C．children with celebrity worship usually have high opinion of themselves |
| D．celebrity worship syndrome can be a serious problem if left overlooked |
What is most likely to be talked about in the paragraph following the passage?
| A．The harm of celebrity worship syndrome. |
| B．What to do with children's celebrity worship syndrome. |
| C．More signs of celebrity worship syndrome. |
| D．Who will suffer most from celebrity worship syndrome. |
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