How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the US.
For some parents, the Internet can seem like a jungle (丛林), filled with danger for their children. But jungles contain wonders as well as dangers and with good guides, some education and a few precautions (预防), the wilds of the Internet can be safely navigated . "Kids have to be on-line. If we tell our kids they can’t be allowed to surf the Internet, we are cutting them from their future,” said an expert.
Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way would be to use what is known as a “content screener ". But this can’t be wholly reliable, and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or to do on the Internet. Another way is that Mum or Dad is nearby when the child is surfing the Internet.
A few other tips:
--- Don't put the PC in the child's room but keep it in an area where Mum or Dad can keep an eye on things. That also makes the Internet more of a family activity.
--- Ask your child what he or she has been doing and about any friend they make online,
--- Tell your child not to give on-line strangers personal information, especially like address and phone number.
--- And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.What is the best way to protect children from improper materials?
| A．To fix a content screener on the computer. |
| B．To be nearby when they are surfing the Internet. |
| C．To talk to them and persuade them to tell right from wrong. |
| D．To buy some search engines for children. |
Which of the following is TRUE according to the passage?
| A．Surfing the Internet is the best way of educating children. |
| B．Using a content screener is most reliable for keeping children having ways to the Internet. |
| C．Search engines can help children to select materials fit for them. |
| D．Children’s not having chances to go to the Internet may have effect on their progress. |
According to the passage, we can infer that _____.
| A．softwares fit for children want programming. |
| B．the Internet will be protected by law |
| C．the Internet contains a lot of harmful sites |
| D．a child who is on-line is in danger |
What does the passage tell us most?
| A．Education. | B．Precautions. |
| C．Search engines. | D．Software. |
Almost anywhere in the world, you can probably see graffiti (涂鸦画). Although it’s usually more common in big cities, it can be found in almost any community, big or small.
The problem with graffiti art is the question of whether it’s really art. This isn’t always an easy question to answer, simply because there are so many different types of graffiti. While some simply consists of collections of letters, known as tags, with little artistic value, such examples are easy to find, especially on larger spaces such as walls.
If it weren’t for the fact that most graffiti is placed on private property without permission, it might be more commonly recognized as a legal form of art. Most graffiti, however, annoys the property owner, who is more likely to paint over it or remove it than accept it as art.
Many ways of removing graffiti have been developed, such as paints that dissolve graffiti paint, or make it easy to remove. Community groups and government departments often organize graffiti-removal teams.
It hardly makes sense to encourage artists to deface (丑化) private or public property; but perhaps there are ways to work with them rather than just oppose them. Graffiti artists can, for example, create murals (壁画) for property owners, and get paid for them.
Maybe we need to start at a very basic level, and find a way to encourage the creation of graffiti art on paper or canvas rather than on walls. After all, who would remember Monet or Picasso if they’d created their masterpieces on walls, only to have them painted over the next day? Finding a solution to such a complex problem is never going to be easy, but with more and more graffiti art being recognized in galleries around the world, we do need to try.What would be the best title for this passage?
| A．How to Be a Good Graffiti Artist. |
| B．Stop Removing Graffiti! |
| C．Do You Like Graffiti? |
| D．Is Graffiti Art? |
The reason why people remove graffiti is that it ______.
| A．makes buildings ugly | B．has no artistic value at all |
| C．robs private property | D．takes up too much space |
In Paragraph 4, the underlined word "dissolve" is closest in meaning to ______.
| A．change | B．flow | C．remove | D．freeze |
The example of Monet and Picasso are mentioned in the passage to indicate that ______.
| A．they are world-famous artists |
| B．they are good at graffiti |
| C．walls are right places to keep their masterpieces |
| D．their works, if painted on the wall, might not be kept long |
The writer’s attitude toward graffiti is that graffiti ______.
| A．should be removed by more countries |
| B．should be saved on larger spaces |
| C．should be created only on paper or canvas |
| D．may be accepted as art |
Like most Oregonians, Stephanie McRae was used to driving in bad weather. Although rain still beat the window of her car, the worst of the day’s storm seemed to have passed as she drove her 11-year-old daughter, Maggie, home from a church at 8:30 p.m. Two little children sat into their car seats in back.
When crossing over Fawcett Creek (小河), McRae found the road just ahead had been washed away. The storm had turned Fawcett Creek into a 100-feet-wide river. Water began to go into the car and the four of them had to climb onto the car’s roof. The car was floating about and was being swept toward the Tillamook River only a few miles ahead. Suddenly it stopped when hitting a logjam (浮木阻塞).The water swept over them, rising higher and higher. Stephanie screamed into the rainy night, almost crying.
“Mom, I have to go and get help,” her 11-year-old daughter Maggie cried.
Stephanie realized if she went by herself, Maggie couldn’t hold on to the other two babies. But Maggie was still recovering from foot surgery. How could she manage? Finally she shouted, “I’m proud of you. Be careful!”
As Maggie McRae struggled to reach the shore, she was all wet. The sixth grader started running to the nearest house. Inside, the neighbors immediately called 911 and were told that firefighters were making their way toward another trapped car. Maggie joined the neighbors, and helped the rescue team point out where her mother was. Thefirefighters saved McRae and her children by using a 35-foot-long ladder.
When Stephanie reached land in safety, Maggie raced into her mother’s arms. “She hugged me for five minutes,” Maggie remembers. Maggie accepted an award for her heroism, but she’s happier to get back to her sports team and her family.What can we infer from the passage?
| A．Without the logjam, McRae’s car would have been swept into the Tillamook River. |
| B．The rain became heavier when McRae drove home. |
| C．McRae’s car was the only vehicle that was blocked in the Fawcett Creek that night. |
| D．Most of the time the weather in Oregon is quite good. |
Stephanie McRae’s screaming on the car’s roof suggested that she felt ______.
| A．surprised | B．helpless | C．disappointed | D．careless |
According to the passage, we can infer that Maggie ______.
| A．was strong enough to hold the two children in the water |
| B．tried to swim to the bank in order to get help |
| C．stopped her sports activities due to her foot injury |
| D．rescued her family using a ladder |
Which of the following is in the correct order of events?
①Firefighters rescued McRae and her children from the river.
②Firefighters were sent to the broken road.
③The neighbors Maggie found called 911.
④The rescue team had got informed of the trouble at Fawcett Creek.
⑤Another trapped car was found in the river by the firefighters.
| A．④②③⑤① | B．④③②①⑤ | C．③④②①⑤ | D．③④②⑤① |
What is the passage mainly about?
| A．A heavy storm that damaged a road and killed lots of drivers. |
| B．A brave young girl who helped save her family from flood. |
| C．Firefighters who rescued a family late at night from flood. |
| D．Great neighbors who saved people swept away into a river. |
Eating different colored foods can keep you healthy, as well as change your mood and behavior. Here is a list of colors, which can change your life.
Blue/Purple
Blue is considered to be peaceful and calming and it has the same effect on our health. The blue / purple color in food is due primarily to their anthocyanins which are antioxidants (抗氧化剂) that are particularly heart healthy and may help support healthy blood pressure. Out of all the blue and purple foods available, blueberries are considered to have the highest antioxidant level. An analysis of the latest data from the National Health and Nutrition Examination Study found that people who eat purple and blue fruits and vegetables are at a reduced risk for high blood pressure and are less likely to be overweight.
A food and health expert says that blue and purple color foods can prevent blood mass formation, and they also lower the risk of cancer.
Foods that contain blue and purple colors are: reddish eggplant (especially the skin), blueberries, blackberries, purple grapes, etc.
Green
We all know that we should eat green as green symbolizes nature. The green foods are rich in isothiocyanates, which help resist cancer.
Dr. Ashok Agarwal, a food and nutrition specialist, explains, "They are excellent sources of folic acid, vitamin K, as well as carotene （胡萝卜素）. Diets high in those above are associated with lowered blood pressure."
Foods that contain the green color are: broccoli, cabbage, cucumbers, etc.
Red
Lycopene (番茄红素) in reddish fruits and vegetables is a powerful antioxidant that has been associated with a reduced risk of some cancers, and also provides protection against heart attacks.
Dr. Smiths says, "Cooked tomato sauces are associated with greater health benefits as compared with the uncooked version as the heating process allows lycopene to be more easily absorbed by the body. Obtaining the most benefit from food depends on proper selection, storage and cooking of the produce."
Foods that contain red color are: Tomatoes and tomato products, watermelon, guava, red onions, red chili, red apples, red grapes, cherries, etc.
Orange
The orange foods are also rich in carotene, which are particularly good antioxidants. These foods are commonly considered eyesight foods because they contain vitamin A.
"Orange fruits and vegetables also play a part in preventing cancer, particularly of the lungs and stomach.Foods that contain the color orange are: Carrots, mangoes, sweet potatoes, pumpkins, etc.The passage tries to tell us that ______.
| A．colors mean a lot to people and their health |
| B．foods of different colors will have different benefits |
| C．eating foods with a color must prevent diseases |
| D．what people should eat in their daily lives |
All the colors mentioned in the passage have the function of ______.
| A．lowering blood pressure | B．improving eyesight |
| C．preventing cancer | D．reducing the risk of heart disease |
Which color can help keep us thin according to the passage?
| A．Purple. | B．Green. | C．Red. | D．Orange. |
The green and orange foods are both rich in _______.
| A．vitamin A | B．folic acid | C．carotene | D．vitamin K |
It can be inferred from the passage that _______.
| A．all grapes help lower the risk of high blood pressure and cancer |
| B．lung cancer can be prevented by eating red-colored foods |
| C．green-colored foods contain a lot of vitamin A which is good for eye health |
| D．tomatoes should be eaten cooked so that we can benefit the most |
How far would you be willing to go to satisfy your need to know? Far enough to find out your possibility of dying from a terrible disease? These days that’s more than an academic question，as Tracy Smith reports in our Cover Story.
There are now more than a thousand genetic(基因的)tests，for everything from baldness to breast cancer，and the list is growing．Question is do you really want to know what might eventually kill you? For instance，Nobel Prize-winning scientist James Watson，one of the first people to map their entire genetic makeup, is said to have asked not to be told if he were at a higher risk for Alzheimer’(老年痴呆症)．
“If I tell you that you have an increased risk of getting a terrible disease，that could weigh on your mind and make you anxious，through which you see the rest of your 1ife as you wait for that disease to hit you．It could really mess you up．”Said Dr．Robert Green，a Harvard geneticist.
“Every ache and pain，”Smith suggested，could be understood as“the beginning of the e nd．”“That’s right．If you ever worried you were at risk for Alzheimer's disease，then every time you can’t find your car in the parking lot，you think the disease has started．”
Dr．Green has been thinking about this issue for years．He led a study of people who wanted to know if they were at a higher genetic risk for Alzheimer’s．It was thought that people who got bad news would，for lack of a better medical term，freak out．But Green and his team found that there was “no significant difference”between how people handled good news and possibly the worst news of their lives．In fact，most people think they can handle it．People who ask for the information usually can handle the information，good or bad，said Green．The first paragraph is meant to ．
| A．ask some questions | B．introduce the topic |
| C．satisfy readers，curiosity | D．describe an academic fact |
Which of the following is true of James Watson?
| A．He is strongly in favor of the present genetic tests. |
| B．He is more likely to suffer from Alzheimer's disease． |
| C．He believes genetic mapping can help cure any disease. |
| D．He doesn’t want to know his chance of getting a disease． |
According to Paragraphs 3 and 4，if a person is at a higher genetic risk，it is .
| A．advisable not to let him know |
| B．impossible to hide his disease |
| C．better to inform him immediately |
| D．necessary to remove his anxiety |
The underlined part“freak out”in Paragraph 5 is closest in meaning to .
| A．break down | B．drop out | C．leave off | D．turn away |
The study led by Dr．Green indicates that people .
| A．prefer to hear good news | B．tend to find out the truth |
| C．can accept some bad news | D．have the right to be informed |
Researchers have developed new software using smart phones’GPS and imaging abilities that determine the exact location of distant objects as well as monitor the speed and direction of moving objects．The software could eventually allow smart phone-armed soldiers to target the location of their enemies．On the home front，the software could be used by everyone，including golfers judging distance to the green and biologists documenting the location of a rare animal without disturbing it．
“The great advantage of a Smartphone is that it provides so many tools in a single，readily available，relatively inexpensive package，”said Qia Wang，a doctoral student who led the development of the software．“For example，on the battlefield，a soldier needs a rangefinder，compass，GPS and other tools to get information before calling in an air strike．With our software，the soldier can have all those instruments in one device that can be purchased off the shelf．When that soldier returns from War，she can use the same Software to protect her family by clocking a speeder near her children’s school and catching the criminal on video．”
Wang and his colleagues developed their software to locate and track：
Targets of known size—when the size of the target is known．a single image is enough to pinpoint the target’s location．
Targets of unknown size—If the exact size of a target is unknown，the software uses two images to triangulate the location of the target·
Moving targets—By taking a short video of a moving target，the smartphone software can calculate how fast the target is moving and in what direction it is going.
“Currently，our software is limited by the physical abilities of smartphone hardware，but the devices are improving rapidly，”Wang said．“We expect that improvements in GPS accuracy，battery life and camera resolution will allow our software to make even more accurate observations．”From Paragraph 1 we can know that the new software can.
| A．determine the speed of moving objects |
| B．1ocate objects in the distance exactly |
| C．defend soldiers against their enemies |
| D．help biologists protect rare animal |
The example given by Qia Wang is meant to .
| A．make an advertisement |
| B．describe the software briefly |
| C．show the benefits of the software |
| D．present the functions of smartphones |
How does the software calculate the speed of a moving object?
| A．By taking a short video． |
| B．By locating its position. |
| C．By taking a single image． |
| D．By measuring real-life size. |
What’s Qia Wang’s attitude towards the future of the software?
| A．Casual． | B．Optimistic． | C．Cautious． | D．Flexible |
What is the best title of the text?
| A．Qia Wang，a Talented Doctoral Student |
| B．Use Smartphones to Their Full Potential |
| C．Targeting and Tracking With Smartphones |
| D．Smartphone-armed Soldiers on the Battlefield |