Your cell phone holds secrets about you. Besides the names and numbers that you’ve programmed into it, traces of your DNA remain on it, according to a new study.
DNA is genetic material that appears in every cell. Like your fingerprint, your DNA is unique to you --- unless you have an identical twin. Scientists today usually analyze DNA in blood, saliva(唾液), or hair left behind at the scene of a crime. The results often help detectives identify criminals and their victims.
Meghan J. McFadden, a biologist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the device. This made her wonder whether traces of DNA remained on cell phones --- even when no blood was involved. To find out, she and a colleague collected flip-style(翻盖式) phones from 10 volunteers. They collected invisible traces of the users from two parts of the phone: the outside, where the user holds it, and the speaker, which is placed at the user’s ear.
The scientists scrubbed(meaning “cleaned”) the phones using a liquid mixture made mostly of alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones back for another week. Then the researchers collected the phones and repeated collecting traces on each phone once more. They discovered DNA that belonged to the phone’s owner on each of the phones.
Surprisingly, DNA showed up even in swabs that were taken immediately after the phones were cleaned. That suggests that washing won’t remove all traces of evidence from a criminal’s cell phone. So cell phones can now be added to the list of clues that can help a crime-scene investigation. McFadden decided to find out whether people leave their DNA on their cell phones when she ____ .
| A．got her cell phone lost by chance |
| B．found a cell phone with blood on it |
| C．heard about a crime involving a cell phone |
| D．did research on cell phones |
The scientists allowed the volunteers to keep their cell phones for a week in order to____.
| A．let them leave their traces on their phones |
| B．avoid keeping their cell phones too long |
| C．give them a chance to get rid of their secrets |
| D．find out who is responsible for the crime |
The last paragraph mainly tells us that cell phones ____ .
| A．do harm to people | B．should be often cleaned |
| C．disclose people’s secrets | D．help deal with crimes |
Which of the following is NOT mentioned in the passage?
| A．The reason for collecting the phones from volunteers. |
| B．The technique of collecting DNA on the phones. |
| C．The method of removing traces of DNA on the phones. |
| D．The purpose of washing the cell phones. |
It was a Sunday and the heavy storm had lasted all night.The morning after the storm,though,was beautiful:blue skies,warm air and a calm,inviting sea touching the shore gently.
My father realised it was a good day for fishing and invited my sister and me to go with him.I was only 14 and fishing had never been my thing, but I decided to go all the same.I’m so glad I did.
On the road to the harbour we could see the terrible destruction on the coast,but the harbour itself was in fairly good shape.After all， it was protected by the arms of a bay that had only one tiny channel to the sea.As we got on board,we noticed two big humps(脊背) in the distance.
On approaching them,we saw it was a mother whale with her baby.We couldn’t believe it ——there aren’t any whales along the coast here.The storm must have driven them across the ocean into the bay, in which the still water was so badlly polluted that nothing could survive.
The little baby whale——actually as big as our boal——was obviously stuck and could not move.The mother dived under the water and came up suddenly,making big whirlpools(漩涡) and waves.”She’s trying to help her baby, but on the wrong side,”my father said.At this point,my father moved our boat in a semicircle to the other side and ,heading the boat towards the baby whale,pushed it gently.With our several gentle pushes the big hump turned over and disappared under water.Then it swam up right beside its mum.They struggled in their desperate attempts to escape but missed the exit and started heading in the wrong direction.We hurried up to the whales
and tried to lead them towards the bay channel.Showly,they let us lead them,some-times rising from the water right beside us to breathe——and to give us a trusting look with those huge eyes.Once they hit their first part of clean water flowing straight from the sea,the mum gave us a wave with her tail and off they swam into the distance.
In the excitement it had felt like only a few minutes, but we had been with those wonderful animals for almost an hour and a half.That was the simple and lasting beauty of the day,Nearly four decades later ,I still look back fondly to that golden day at sea. The author says “I’m so glad I did .”(in Para.2)because __________.
| A．be witnessed the whole process of fishing |
| B．he enjoyed the beauty of the calm sea |
| C．he experienced the rescue of the whales |
| D．he spent the weekend with his family |
The harbour survived the storm owing to____________.
| A．the shape of the harbour |
| B．the arms of the bay |
| C．the still water in the channel |
| D．the long coast line |
The mother whale failed to help her baby because__________.
| A．she had stayed in the polluted water for too long |
| B．the whirlpools she had made were not big enough |
| C．she had no other whales around to turn to for help |
| D．the waves pushed her baby in the wrong direction |
what is the theme of the story?
| A．Saving lives brings people a sense of happiness |
| B．Fishing provides excitement for children |
| C．It’s necessary to live in harmony with animals |
| D．It’s vital to protect the environment |
I chose to study in Madrid because I had a desire to learn Spanish. My first impressions of Madrid were incredible. It was before the New Year that I arrived in Madrid for the first time. While traveling to my Spanish friend’s house in a taxi, I appreciated the buildings along the road which were different from those of my own country.
There are an incredible number of restaurants and bars from all over the world. If you are really into sightseeing, I hope you have rechargeable batteries for your digital camera, because one week really isn’t enough time to see everything here including a number of art, science, and historical museums as well as parks, buildings, and amazing landscapes.
What I liked best about life in Madrid was the fact that if you were frustrated with schoolwork and wanted to have some fun, you can easily go out. The nightlife never seems to stop and the people are all very friendly. You can meet people and practice Spanish while having fun at the same time.
What I liked least was the fact that many people smoked in the streets. Also, coming from the US, I was used to having a big breakfast every morning, but while living with an actual Spanish family, I wasn’t really satisfied with the food in the morning.
I think I have definitely become more independent since I came back from Spain. Living in a big city like Madrid I found that it is necessary to plan ahead and to make a schedule for future. There is so much to see, not just in the Spanish World, but in the European World as well. What’s the purpose of the text?
| A．To attract people to tour around Madrid. |
| B．To show how to enjoy Spanish culture. |
| C．To give advice on how to study Spanish. |
| D．To describe the author’s life in Madrid. |
Why did the author suggest taking rechargeable batteries?
| A．It’s difficult to deal with the used batteries. |
| B．It’s not convenient to recharge batteries. |
| C．There are few stores that sell ordinary batteries. |
| D．You will find lots of places worth taking pictures of. |
Which of the following in Madrid didn’t please the author?
| A．Parks and buildings. | B．Restaurants and bars. |
| C．Nightlife. | D．Breakfast. |
While Jennifer was at home taking an online exam for her business law class, a monitor（监控器）a few hundred miles away was watching her every move.
Using a web camera equipped in Jennifer’s Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked - remotely - to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?
In the battle against cheating, this is the cutting edge and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid - that students haven’t just searched the Internet to get the right answers.
Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.
Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students’ identities using personal information, such as the telephone number they once used.
Other programs can produce unique exam by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test question are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating.Why was Jennifer watched in an online exam?
| A．To correct her typing mistakes. |
| B．To find her secrets in the room. |
| C．To prevent her from slowing down. |
| D．To keep her from dishonest behaviors. |
The underlined expression cutting edge in Paragraph 3 is closest in meaning to______.
| A．advanced technique | B．sharpening tool |
| C．effective rule | D．dividing line |
For Internet universities, exams and diplomas will be valid if _____.
| A．they can attract potential students |
| B．they can defeat academic cheating |
| C．they offer students online help |
| D．they offer many online courses |
Many people think that listening is a passive business. It is just the opposite. Listening well is an active exercise of our attention and hard work. It is because they do not realize this, or because they are not willing to do the work, that most people do not listen well.
Listening well also requires total concentration upon someone else. An essential part of listening well is the rule known as ‘bracketing’. Bracketing includes the temporary giving up or setting aside of your own prejudices and desires, to experience as far as possible someone else’s world from the inside, stepping into his or her shoes. Moreover, since listening well involves bracketing, it also involves a temporary acceptance of the other person. Sensing this acceptance, the speaker will seem quite willing to open up the inner part of his or her mind to the listener. True communication is under way and the energy required for listening well is so great that it can be accomplished only by the will to extend oneself for mutual growth.
Most of the time we lack this energy. Even though we may feel in our business dealings or social relationships that we are listening well, what we are usually doing is listening selectively. Often we have a prepared list in mind and wonder, as we listen, how we can achieve certain desired results to get the conversation over as quickly as possible or redirected in ways more satisfactory to us. Many of us are far
more interested in talking than in listening, or we simply refuse to listen to what we don’t want to hear.
It wasn’t until toward the end of my doctor career that I have found the knowledge that one is being truly listened to is frequently therapeutic(有疗效的) In about a quarter of the patients I saw, surprising improvement was shown during the first few months of psychotherapy(心理疗法), before any of the roots of problems had been uncovered or explained. There are several reasons for this phenomenon, but chief among them, I believe, was the patient’s sense that he or she was being truly listened to, often for the first time in years, and for some, perhaps for the first time ever.. The phrase “stepping into his or her shoes” in paragraph 2 probably means _______.
| A．preparing a topic list first |
| B．focusing on one’s own mind |
| C．directing the talk to the desired results |
| D．experiencing the speaker’s inside world |
. What is mainly discussed in Paragraph 2 ?
| A．How to listen well. |
| B．What to listen to. |
| C．Benefits of listening. |
| D．Problems in listening |
According to the author , in communication people tend to ________.
| A．listen actively |
| B．listen purposefully |
| C．set aside their prejudices |
| D．open up their inner mind |
According to the author , the patients improved mainly because _______.
| A．they were taken good care of. |
| B．they knew they were truly listened to. |
| C．they had partners to talk to. |
| D．they knew the roots of problems. |
It is widely known that any English conversation begins with The Weather. Such a fixation with the weather finds expression in Dr.Johnson’s famous comment that “When two English meet, their first talk is of weather.” Though Johnson’s observation is as accurate now as it was over two hundred years ago, most commentators fail to come up with a convincing explanation for this English weather-speak.
Bill Bryson, for ezample, concludes that,as the English weather is not at all exciting,the obsession with it can hardly be understood. He argues that”To an outsider,the most striking thing about the English weather is that there is not very much of it.” Simply, the reason is that the unusual and unpredictable weather is almost unknown in the British Isles.
Jeremy Paxman, however, disagrees with Bryson, arguing that the English weather is by nature attractive. Bryson is wrong, he says,because the English preference for the weather has nothing to do with the natural phenomena.”The interest is less in the phenomena themselves, but in uncertainty.” According to him, the weather in England is very changeable and uncertain and it attracts the English as well as the outsider.
Bryson and Paxman stand for common misconceptions about the weather-speak among the English. Both commentators, somehow, are missing the point. The English weather conversation is not really about the weather at all. English weather-speak is a system of signs ,which is developed to help the speakers overcome the natural reserve and actually talk to each other. Everyone knows conversations starting with weather-speak are not requests for weather data. Rather, they are routine greetings,conversation starters or the blank”fillers”, In other words, English weather-speak is a means of social bonding.The author mentions Dr.Johnson’s comment to show that________.
| A．most commentators agree with Dr.Johnson |
| B．Dr.Johnson is famous for his weather observation |
| C．the comment was accurate two hundred years ago |
| D．English conversations usually start with the weather |
What doe s the underlined word”obsession” most probably refer to?
| A．A social trend. | B．An emotional state. |
| C．A historical concept. | D．An unknown phenomenon. |
According to the passage,Jeremy Paxman believes that________.
| A．Bill Bryson has little knowledge of the weather |
| B．there is nothing special about the English weather |
| C．the English weather attracts people to the British Isles |
| D．English people talk about the weather for its unccrtainty |
What is the author’s main purpose of writing the passage?
| A．To explain what English weather-speak is about. |
| B．To analyse misconceptions about the English weather. |
| C．To find fault with both Bill Bryson and Jeremy Paxman. |
| D．To convince people that the English weather is changeable. |
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