题干

   Cellphones, tablets, and computers are keeping children and teenagers awake at night-even when they' re not in use, according to new research. A study published on Monday in JAMA Pediatrics says that media devices are causing kids to sleep less and reducing the quality of sleep that they get. This leads to trouble of staying awake the next day.

Researchers analyzed hundreds of studies of children and teens aged 6-19. The scientists found a strong and consistent association between the use of technology at bedtime and poor sleeping. The reason is not just that kids are staying up too late with their devices. Using a computer can overstimulate the mind and emotions, the researchers say. A smartphone or tablet also gives off a light that affects the body's natural timing. These factors contribute to poor quality sleep. And many kids could be at risk. According to the study,72% of all children and 89% of adolescents have at least one device in their sleep environment. Most of these devices are used near bedtime.

"The harmful association between screen-based devices and kids' sleep is a major public health concern," the study concludes. In their conclusion, the researchers urge parents to understand the damaging influence of device use before sleep.

【小题1】What do the researchers disagree with?
A.Children even in dreams can be influenced by media devices.
B.Most adolescents like to play media devices before sleep.
C.Using media devices on bed makes kids sleep difficultly.
D.Using media devices can not excite the mind and emotions.
【小题2】How does a smartphone affect a child's sleep?
A.By making noises.
B.By giving off a light.
C.By attracting a kid's attention.
D.By sending out electronic waves.
【小题3】What can we learn from the second paragraph?
A.Media devices anytime put kids in danger.
B.Adolescents are more easily affected than children by phones.
C.Using technology at bedtime causes poor sleeping.
D.Media devices affect kid's performance at school.
【小题4】Whom does this article most probably writes to?
A.Scientists.B.Parents.
C.Children.D.Producers.
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同类题2

   In the United States alone,over 100 million cell-phones are thrown away each year.Cell-phones are part of a growing mountain of electronic waste like computers and personal digital assistants.The electronic waste stream is increasing three times taster than traditional garbage as a whole.

Electronic devices contain valuable metals such as gold and silver.A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste,the concentration(含量)of gold and other precious metals was higher in So-called e-waste than in naturally occurring minerals.

Electronic wastes also contain many poisonous metals.Even when the machines are recycled and the harmful metals removed,the recycling process often is carried out in poor countries,in practically uncontrolled ways which allow many poisonous substances to escape into the environment.

Creating products out of raw materials creates much more waste material,up to 100 times more,than the material contained in the finished products.Consider again the cell-phone,and imagine the mines that produced those metals,the factories needed to make the box and packaging(包装)it came in.Many wastes produced in the producing process are harmful as well.

The U.S Environmental Protection Agency notes that most waste is dangerous in that"the production, distribution,and use of products-as well as management of the resulting waste-all result in greenhouse gas release." Individuals can reduce their contribution by creating less waste at the start-for instance,buying reusable products and recycling.

In many countries the concept of extended producer responsibility is being considered or has been put in place as an incentive(动机)for reducing waste.If producers are required to take back packaging they use to sell their products,would they reduce the packaging in the first place?

Governments' incentive to require producers to take responsibility for the packaging they produce is usually based on money.Why,they ask,should cities or towns be responsible for paying to deal with the bubble wrap(气泡垫)that encased your television?

From the governments' point of view,a primary goal of laws requiring extended producer responsibility is to transfer both the costs and the physical responsibility of waste management from the government and tax-payers back to the producers.

【小题1】By mentioning the Swiss study,the author intends to tell us that .
A.the weight of e-goods is rather small
B.natural minerals contain more precious metals
C.E-waste deserves to be made good use of
D.the percentage of precious metals is heavy in e-waste
【小题2】The responsibility of c-waste treatment should be extended .
A.from producers to governments
B.from governments to producers
C.from individuals to distributors
D.from distributors to governments
【小题3】What docs the passage mainly talk about?
A.The increase in e-waste.B.The creation of e-waste.
C.The seriousness of e-waste.D.The management of e-waste.

同类题3

   For some people,music is no fun at all. About four percent of the population is what scientists call “amusic.” People who are amusic are born without the ability to recognize or reproduce musical notes(音调). Amusic people often cannot tell the difference between two songs. Amusics can only hear the difference between two notes if they are very far apart on the musical scale.

As a result, songs sound like noise to an amusic. Many amusics compare the sound of music to pieces of metal hitting each other. Life can be hard for amusics. Their inability to enjoy music sets them apart from others. It can be difficult for other people to identify with their condition. In fact, most people cannot begin to grasp what it feels like to be amusic. Just going to a restaurant or a shopping mall can be uncomfortable or even painful. That is why many amusics intentionally stay away from places where there is music. However, this can result in withdrawal and social isolation. “I used to hate parties,” says Margaret,a seventy-year-old woman who only recently discovered that she was amusic. By studying people like Margaret, scientists are finally learning how to identify this unusual condition.

Scientists say that the brains of amusics are different from the brains of people who can appreciate music. The difference is complex, and it doesn't involve defective hearing. Amusics can understand other nonmusical sounds well. They also have no problems understanding ordinary speech. Scientists compare amusics to people who just can't see. certain colors.

Many amusics are happy when their condition is finally diagnosed(诊断). For years, Margaret felt embarrassed about her problem with music. Now she knows that she is not alone. There is a name for her condition. That makes it easier for her to explain. “When people invite me to a concert, I just say,” No thanks, I'm amusic,'“says Margaret. “I just wish I had learned to say that when I was seventeen and not seventy.”

【小题1】Which of the following is true of amusic?
A.Listening to music is far from enjoyable for them.
B.They love places where they are likely to hear music.
C.They can easily tell two different songs apart.
D.Their situation is well understood by musicians.
【小题2】According to Paragraph 3, a person with “defective hearing” is probably one who ___________.
A.dislikes listening to speeches
B.can hear anything nonmusical
C.has a hearing problem
D.lacks a complex hearing system
【小题3】In the last paragraph, Margaret expressed her wish that __________.
A.her problem with music had been diagnosed earlier
B.she were seventeen years old rather than seventy
C.her problem could be easily explained
D.she were able to meet other amusics
【小题4】What is the passage mainly concerned with?
A.Amusics' strange behaviours.
B.Some people's inability to enjoy music.
C.Musical talent and brain structure.
D.Identification and treatment of amusics.

同类题4

Thinking is something you choose to do as a fish chooses to live in water. To be human is to think. But thinking may come naturally without your knowing how you do it. Thinking about thinking is the key to critical(批判性的)thinking. When you think critically, you take control of your thinking processes(过程). Otherwise, you might be controlled by the ideas of others. Indeed, critical thinking is at the heart of education.
The word "critical" here has a special meaning. It does not mean taking one view against another view, as when someone criticizes another person for doing something wrong. The nature of critical thinking is thinking beyond the easily seen—beyond the pictures on TV, the untrue reports in the newspapers, and the faulty reasoning (错误的推理).
Critical thinking is an attitude as much as an activity. If you are curious about life and desire to dig deeper into it, you are a critical thinker; if you find pleasure in deep thinking about different ideas, characters, and facts, you are a critical thinker.
Activities of the mind and higher-order reasoning are processes of deep and careful consideration. They take time, and do not go hand in hand with the fast speed in today's world, fast foods, instant coffee, and self-developing film. If you are among the people who believe that speed is a measure of intelligence, you may learn something new from a story about Albert Einstein. The first time Banish Hoffman, a scientist, was to discuss his work with Albert Einstein, Hoffman was too nervous to speak. But Einstein immediately put Hoffman at ease by saying, "Please go slowly, I don't understand things quickly."
【小题1】Critical thinking is important to us because if we do not think critically,__________.
A.it will be hard for us to think naturally and fast
B.we will follow the ideas of others naturally
C.we might be controlled by other people's ideas
D.we might be fooled by other people's ideas
【小题2】If you are a critical thinker, you will________.
A.criticize other people for their mistakesB.trust the reports in the newspapers
C.take one view against another viewD.think deeply about different ideas
【小题3】In the last paragraph, "something new" suggests that________.
A.the smarter you are, the faster you do things
B.intelligence is not decided by speed
C.speed can improve intelligence
D.the faster you do things, the smarter you become
【小题4】What would be the best title for the passage?
A.Understanding Critical ThinkingB.Thinking and Critical Thinking
C.Thinking Natural and HumanD.Thinking Fast Means Intelligence

同类题5

   We all know that we need some degree of smarts to make it in the business world. The measure of this " smarts" is IQ. You were born with your IQ and it stays relatively the same throughout life. So it is pretty hard to become an Einstein if you were born with an average IQ. People often associate someone's IQ with his or her ability to be successful. While important to you, IQ becomes less important as you grow in your career. Actually, there are other ingredients that are important to ensure career or business success, which account for about 80% of adult success.

EQ is one of the key ingredients. Your EQ is really about soft skills. It means being able to relate to others and make things happen. According to Susan Dunn, the EQ coach, “The higher up you go in your career, the more EQ matters. Eventually you'll find yourself in a playing field where everyone has skills as good as yours, and then what makes you stand out? It's how you handle yourself and others , your leadership and communication skills and other emotional intelligence competencies (能力). ” The great news about EQ is that you can improve it. Unlike IQ, you can work on different EQ competencies so that you can increase your EQ score.

But to succeed, combining a high EQ and IQ is not enough. You also need to think about your RQ. The term RQ was coined by Dr. Charles who found the most successful companies all have one thing in common - strong reputations or high RQs. But RQ is not just for companies. We as individuals can combine it with our IQ and EQ to ensure career success. To succeed you need to be known for something. You must stand out from countless (无数的) others with similar skills and experience. Like EQ, your RQ can be improved with personal work. Understanding, building and communicating your personal brand will help you increase your RQ and your ability to take control of your career.

【小题1】What does the underlined word “ingredients”in Paragraph 1 probably mean?
A.Scores.B.Factors.
C.Careers.D.Measures.
【小题2】According to the passage, which cannot be improved?
A.IQ.B.EQ.
C.RQ.D.Not mentioned.
【小题3】____________ if you want to move up in your career.
A.You will have to spend more time on your working field
B.Little importance should be attached to the matter of IQ
C.You are supposed to apply more soft skills to your career
D.You don't have to take communication skills seriously
【小题4】Which of the following can be learned from the passage?
A.A high EQ and IQ will certainly guarantee your success.
B.All the most successful companies have average reputations.
C.You need to make your skills and experience advertised.
D.To succeed you need a winning combination of IQ, EQ and RQ.