Let’s face it: Teenagers spend hours texting, socializing on Facebook and playing video games.And it’s driving their parents nuts.
Sure, there are real dangers connected with all this screen time—everything from cyberbullying(网络欺凌) to couch-potato obesity.Not to mention driving while texting, and shortened attention spans(持续时间).
Douglas Gentile, who studies the effects of media on children, says texting, Facebook and video games are not naturally bad.Nor are they naturally better or worse than watching TV, although they do lead to different risks, such as cyberbullying.
But research has shown that the more time kids spend in front of screens—whether it’s TV or instant-messaging—the worse their school performances are.“That doesn’t mean it’s true for every kid, but it makes sense, that for every hour a kid is playing video games, it’s an hour that they’re not doing homework or reading or exploring or creating,” he said.If screen time is taking the place of doing their homework, that’s bad.But if their homework is done, well, so what?
The study also found that the more time kids spend with media, the lower their grades and levels of personal satisfaction are.Gentile said the influence of screen time on school work can be reduced by what he calls “protective factors”.Those might include good teachers and a high-performing school, love of reading, coming from a family where education is valued.“If you had all these protective factors, then that one little risk factor, who cares?”
One thing parents should worry about is the way electronic devices encourage multitasking（多任务处理).
“As adults, your response speeds up, you’re quicker to look over your shoulder and notice little noises or lights.However this is not what the kids need when they get to the classroom.Scanning to see when the next message comes may not be good for kids.The more distractions(分心的事物) you have, the worse your performance is.” Getting kids to turn off their phones, iPods in order to let them concentrate（集中) on homework is a fight worth having.What statement may Gentile agree to?
| A．Kids get bad marks when using Facebook. |
| B．TV or texting affects kids equally. |
| C．Kids prefer video games to books. |
| D．Watching TV is better than playing video games. |
By saying “one little risk factor”, Gentile referred to ________
| A．love for reading | B．valuing education |
| C．screen time | D．good teachers |
It can be inferred from the last paragraph that________.
| A．kids can give quick answer to questions if texting |
| B．Multitasks aren’t really good for every kid |
| C．electric devices increase the attention of kids |
| D．kids perform well if doing many tasks together |
What might be the most suitable title for the passage?
| A．Are kids suffering cyber bullying on Facebook? |
| B．Are texting and Facebook worse for teens than TV? |
| C．Are kids willing to turn off their electric devices? |
| D．Are texting causing kids to lose interest in reading? |
When Mr. David retired(退休), he bought a small house in a village near the sea. He liked it and hoped to live a quiet life in it. But to his surprise, many visitors came to see his house in summer holidays, for it was the most interesting building in the village. From morning to night, there were visitors outside the house. They kept looking into the rooms through the windows and many of them even went into the house. He decided to drive the visitors away. So he put a notice on the window. The notice said，“If you want to satisfy your curiosity(好奇心),come in and look around. Price: twenty dollars.”Mr. David was sure that the visitors would stop coming, but he was wrong. More and more visitors came and Mr. David had to spend every day showing them around his house. “I came here to retire, not to work as a guide(导游)”, he said angrily. In the end, he sold the house and moved away.Mr. David’s house was that many visitors came to see it.
| A．so small | B．so quiet | C．so interesting | D．such interesting |
Mr. David put a notice on the window in order.
| A．to drive the visitors away |
| B．to satisfy the visitors curiosity |
| C．to let visitors come in and look around |
| D．to get some money out of the visitors |
The notice made the visitors .
| A．more interested in his house | B．lost interest in his house |
| C．angry at the unfair price | D．feel happy about the price |
After Mr. David put up the notice .
| A．the visitors didn’t come any more |
| B．fewer and fewer visitors came to see his house |
| C．more and more visitors came for a visit |
| D．no visitor would pay the money for a visit |
At last he had to sell his house and move away because .
| A．he did not like it at all |
| B．he could not work as a guide |
| C．he made enough money and wanted to buy a new expensive house |
| D．he could not live a quiet life in it |
For all dinner tables, a glass of milk seems to be a must. At least it was when I was growing up. It is widely believed that milk is a must in building strong bones and teeth. There’s no doubt that dairy products, especially milk, are high in protein and calcium, and Vitamin D and Vitamin A are added to most milk products.
While it’s well known that our bones need calcium, some studies suggest that high calcium intake doesn’t necessarily lower a person’s risk for fractures（骨折）. A Harvard study found that people who drank two or more glasses of milk had no greater protection from breaking a bone than those who drank a glass or less a week.
There is no doubt that we need calcium. Some anti-dairy supporters claim dairy products can lead to heart disease. Much of this claim is based on high-fat dairy products, like cheese and cream, which may indeed lead to some health problems. Some studies have linked high milk intakes with a risk of prostate cancer; this seems also to be caused by high-fat dairy products, but not by dairy products in general.
Although milk has always been regarded as the most important thing we need for our bones, one of the most important things in strengthening bones and reducing the risk of osteoporosis（骨质疏松）is weight-bearing exercise, such as jogging, walking, and weight lifting.
Perhaps we should think of dairy products as less like a nutrient and more like a food. If you like it, eat it. If not, find something else to eat. Some claims may not be completely true. When I eat cream, I’m not thinking about calcium, protein, or any such thing. I’m thinking it is delicious.What is the best title for this passage?
| A．Milk: is it really necessary for children? | B．The disadvantages of drinking milk. |
| C．Milk causes health problems. | D．Milk: is it really good for the body? |
For people who want to reduce the risk of osteoporosis, we can infer that the writer may suggest that they ________.
| A．avoid milk with Vitamin D and Vitamin A added |
| B．spend some time exercising |
| C．take in as much calcium as possible |
| D．drink more than two glasses of milk every day |
Based on the passage, we learn the writer may agree that ________.
| A．milk is the most important thing that we need for our bones |
| B．children should not be permitted to eat cream |
| C．milk should be considered more like a food than a nutrient |
| D．children should drink milk whether they like it or not |
What can we learn from the passage?
| A．Some dairy products may harm our health. |
| B．Milk has the highest level of protein of any food. |
| C．The writer seldom drank milk when he was young |
| D．People who drink milk every day are at a high risk of getting a heart disease. |
One would have to be a fool to overlook (忽视)the importance of using positive(积极的) thinking for you rather than allowing negative thinking to work against you. In recent years, research in psychopharmacology (精神药理学) has proved what many people have known over the centuries: a positive attitude is good for you, good for your health, good for your wealth, good for everything. Researchers found that a positive attitude produces a specific chemical reaction which makes people feel better, while negative thinking results in a decline of hormone (荷尔蒙) and shuts down the immune (免疫的) system. This leads to illness and depression. Positive thoughts will make you feel better. Even if you must begin by literally forcing yourself to be positive (faking it, so to speak), it will become contagious (会传播的) and the positive thoughts will generate nice little chemicals and good feelings which will reinforce the positive thoughts.
For example, if you force yourself to smile or laugh, even when you don't feel like smiling or laughing, if you keep at it for a few minutes, you will soon feel like it. Feelings can generate (导致)thoughts, but thoughts can also generate feelings. Control your thoughts and you can control your feelings. Positive thinking is important in all aspects of our lives. There is probably no single factor more important in determining your success in achieving your career objectives than your own attitude.
It's often been said that in the land of the blind, the one-eyed man is king. And in the office of militant (好战) negativism, the positive workers shine like gold. You cannot control external events, but you can learn to control your reaction to those events and thereby have a positive attitude and be happy. This vital key to success is totally within your control. Use it.We can infer from the passage that .
| A．positive thinking can cure you of your diseases |
| B．positive thinking can easily be generated by anyone |
| C．a decline of hormone may cause you to be depressed |
| D．a specific chemical reaction is the cause of negative thinking |
According to the passage, which of the following is true?
| A．Feeling and thoughts can generate each other. |
| B．It's easier to control thoughts than to control feelings. |
| C．Your success depends wholly on your attitude. |
| D．Keeping smiling will surely make you successful. |
Just like a one-eyed man in the land of the blind, you should.
| A．control your feeling to what is happening to you |
| B．be king in your office |
| C．pay no attention to what is going on around you |
| D．take positive attitude in the office of militant negativism |
The best title to the passage is.
| A．The Bad Effect of Negative Thinking | B．Why Should People Think |
| C．Thinking: The Vital Way | D．Positive Thinking Benefits People |
Experience the Colorado River the Hualapai Way!
River Runners offers the ONLY One Day Whitewater trip ANYWHERE at the GRAND CANYOU!
Since1973，Hualapai River Runners has been conducting whitewater rafting journey to the Colorado River. Our experienced guides expertly sail along the river and share the history of the Canyon and the Hualapai people with you.
Visitors experience the excitement of whitewater rapids and then stop to enjoy the impressive beauty of Travertine Falls and a tasty lunch．No charge for children 2 years and under.
One-Day Trip
Retail$249.00+$79.00(helicopter and round-trip ground transportation)
Whitewater rafting tours begin in Peach Springs．Hualapai River Runners transports you to Diamond Creek, which is the starting point for the 37 mile rafting tour. Lunch is included and upon arrival at the rafting tour termination point(终点)，fly out of the Grand Canyon by helicopter （直升机）to Grand Canyon West．
Two-Day Trip
Retail$549.00+$79.00(helicopter and round-trip ground transportation)
Two-day rafting trips with one night on the Colorado River. All supplies and meals are included. Two days in the Grand Canyon，on the Colorado River allows more time to explore one of the Seven Wonders of the World.
Tours Include：
●Round-trip transportation from Peach Springs to the starting point and from the termination point back to Peach Springs．
●Snack, drinks and lunch(vegetarian meals available upon request)
●Waterproof dry bags for storing your cameras, sunscreen, dry clothes, etc．
●The helicopter part of transportation is weather permitting. If the helicopter transportation is cancelled because of bad weather, the raft will continue an additional two hours to South Cove and a maximum（最大量）$20.00 per customer will be given back.
Special Website booking rate 15% off rafting in April 2010. So book now!
Call us Toll Free Today! Tel: 1-888-868-9378Where do whitewater rafting tours start?
| A．Travertine Falls | B．Peach Springs | C．Diamond Creek | D．Grand Canyon West |
We learn from the passage that _______.
| A．Hualapai River Runners provides dry clothes |
| B．you will get $20 back if you are dissatisfied |
| C．the trip is free of charge for children under 2 |
| D．online booking has a better offer all year round |
What is the purpose of the passage?
| A．To explore the Hualapai culture |
| B．To attract people to the sights |
| C．To explain how to make a rafting trip |
| D．To introduce the history of the Colorado River |
Few people realize that there is a big difference between formal English and informal English. Formal English is used for most writing, and often in public speaking and formal meetings. It pays close attention to grammar rules, because if we use proper grammar, our meaning is often more precise. Also, on important occasions, we do not want to appear uneducated or to offend (冒犯) others, so we are very careful about how we speak. Informal English is used in speaking or writing to our friends and family. It often does not pay such close attention to grammar rules, because when we speak or write to them, we want our words to flow quickly. Also, with our friends and family, we are usually not so worried about appearing uneducated or about offending them by how we write or speak.
A big difference between formal and informal English is the use of contractions. A contraction is where we make a word shorter or where we put two words together and take away some of the letters. For example, instead of saying “do not”, many people say “don’t”. Using contractions in our speech is fine because it sounds natural, especially when we speak to our friends. In formal writing, however, contractions are usually avoided because people might think that you have made a mistake, or that you do not know proper grammar.
In the same way we might make words shorter, in informal English we often make sentences shorter as well. For example, if someone asks you your name, you will likely answer with one word: your first name. However, in formal English we usually use complete sentences. For example, we might write “My name is John”. In most speaking, we may not need to use every word in a sentence because the person we are speaking to will probably still understand us. In most writing, however, every word in a sentence must be written out in order to make sure that we can be understood.When we use formal English, _______.
| A．we will offend others |
| B．we will appear educated on important occasions |
| C．we needn’t pay more attention to grammar rules |
| D．we can express ourselves more directly and more quickly |
What’s the meaning of the underlined word “precise”?
| A．clear | B．direct | C．puzzling | D．simple |
Contractions are best used when we are _______.
| A．speaking at a formal meeting | B．speaking in public |
| C．speaking to our friends | D．writing an application (申请) letter |
In speaking, we do not always use complete sentences because ______.
| A．we do not care about grammar | B．we do not want to sound stupid |
| C．we can still be understood | D．we don’t want to waste time |