American researchers have discovered that human brains and sleep patterns are confused by devices(装置) that give out bright lights. Electronics, such as laptops, mislead our minds into thinking that it is still daytime, preventing sleep and increasing the risk of insomnia.
Sleep experts say human's natural body clock begins to rest and relax from the day between 9 and 10 pm but the use of computers confuses it.
A person's brain biologically becomes awake when the sun is out because bright light after dark causes the brain to stop producing the hormone (荷尔蒙) called melatonin that makes us sleepy.
Researchers say blue light from devices such as iPads, which is expected to become a popular reading tool when it comes out later this month, is particularly disruptive (干扰的)during the night when the brain thinks it should be dark.
Experts say a good book is a far better way of resting the brain and ensuring a good night's sleep because the bedside lamp(灯) light doesn't affect the brain as it does not look straight into a person's eyes.
“Potentially, yes, if you're using an iPad or a laptop close to bedtime... that light can be stimulating (刺激) to the brain to make it more awake and delay your ability to sleep，” Phyllis Zee, a professor at Northwestern University and director of the school's Centre for Sleep & Circadian Biology, told CNN.
“And I think more importantly, it could also be enough to affect your circadian (昼夜节律的) rhythm. This is the clock in your brain that determines when you sleep and when you wake up. ”
Alon Avidan, associate director of the Sleep Disorders Center at the University of California Los Angeles, added, “I wish people would just take a boring book — an oldfashioned book — and read by a lamp.”The underlined word “insomnia” in the first paragraph probably means “________”．
| A．being unable to eat properly |
| B．brain injury |
| C．being unable to fall sleep |
| D．lack of energy |
Melatonin is the hormone that ________.
| A．makes us sleepy |
| B．helps us relaxed |
| C．prevents us from waking up |
| D．makes us excited |
The bedside lamp light doesn't affect the brain because ________.
| A．it doesn't give out blue light |
| B．it's not as bright as your laptop |
| C．it doesn't enter your eyes directly |
| D．it is adjustable |
We can conclude from the passage that ________.
| A．one who uses his laptop often before bedtime can have his body clock disturbed |
| B．using a laptop before bedtime is more harmful than using an iPad |
| C．we'd better not do anything before going to bed |
| D．the best time to go to bed is before 9 pm |
Who is your role model? Normally the answer to this question would be anyone around you who you find truly inspiring. It could also be someone like J. K. Rowling or Martin Luther King Jr. who have proven to be strong and intelligent people.
However, in today's world, stars are regarded as role models along with the heroes listed above, despite their intentions or actions. Teens attempt to imitate their actions for two major reasons. First, to be fashionable and accepted by popular culture, and second»because stars' actions are so well documented by the media that it seems to grab our attention and turns it to following stars' lives. Much of the reports about stars is shocking and exhibits bad morals or lifestyles that aren't right for teenagers. In addition, almost everything stars do is described beyond truth to make a shocking story by taking it to the next level.
However, teens must take responsibility for their actions. We can't always blame stars for influencing us. Only you have control over yourself and only you choose to do something. Our bodies and actions are in the hands of no one else.
Now, who ever said stars are role models? Whether they choose to be or not, stars set examples as soon as they step into the spotlight. With reporters following and recording every move they make, it is impossible not to be watched and then be imitated. These people influence, teens whether or not they want to. Why should someone who doesn't want to be setting an example set one? So，should we look up to them or to people who are true and good role models? It's our responsibility as teens to know right from wrong, and it's time for us to take responsibility for our actions. In doing so，we will lean toward those inspiring people that want to be setting an example, and follow in their steps to be like them.
According to the first paragraph, _____can usually be role models.
| A．political leaders |
| B．wealthy writers |
| C．people inspiring others |
| D．people with great intelligence |
What are the major reasons for the teens to imitate stars? _____.
| A．Interest in stars' life and expectation of getting rich |
| B．Motivation for being fashionable and inspiration from popular examples |
| C．Intentions to gain acceptance and encouragement from stars' lifestyle |
| D．Desires to be stylish and great influence from the mass media |
The author writes the passage mainly to advise the teenagers to_____.
| A．have a control over their own bodies and actions |
| B．be responsible for their own choices and behaviors |
| C．follow fashionable stars' steps to be more popular |
| D．choose right role models according to different reports |
It can be inferred from the passage that .
| A．stars have the responsibility for teenagers' actions |
| B．not all famous stars choose to influence teenagers |
| C．teenagers choose those inspiring people as their role models |
| D．stars set examples immediately they stepped into the spotlight |
A metaphor is a poetic device that deals with comparison. It compares similar qualities of two dissimilar objects. With a simple metaphor, one object becomes the other: Love is a rose. Although this does not sound like a particularly rich image, a metaphor can communicate so much about a particular image that poets use them more than any other type of figurative language. The reason for this is that poets compose their poetry to express what they are experiencing emotionally at that moment. Consequently, what the poet imagines love to be may or may not be our understanding of love. Therefore, the poet’s job is to enable us to experience it, to feel it the same way as the poet does.
Let’s analyze this remarkably simple metaphor concerning love and the rose to see what it offers. Because the poet uses a comparison with a rose, first we must examine the characteristics of that flower. A rose is impressive in its beauty, its petals（花瓣）are nicely soft, and its smell is pleasing. It’s possible to say that a rose is actually a feast to the senses of sight, touch, and smell. The rose’s appearance seems to border on perfection, each petal seemingly equal in form. Isn’t this the way one’s love should be？A loved one should be a delight to one’s senses and seem perfect.
However, there is another dimension added to the comparison by using a rose. Roses have thorns. The poet wants to convey the idea that roses can be tricky. So can love, the metaphor tells us. When one reaches out with absolute trust to touch the object of his or her affection, ouch, a thorn can cause great harm! “Be careful,” the metaphor warns, “Love is a feast to the senses, but it can overwhelm us, and it can also hurt us and cause acute suffering.” This is the poet’s understanding of love—an admonition (劝诫). What is the point？Just this: It took almost 14 sentences to clarify what a simple metaphor communicates in only four words! That is the artistry and the joy of the simple metaphor. According to the passage, a metaphor is a ________.
| A．description of two similar objects in a poetic way |
| B．literary device specially employed in poetry writing |
| C．contrast between two different things to create a vivid image |
| D．comparison between two different objects with similar features |
As is meant by the author, thorns of a rose ________.
| A．add a new element to the image of love |
| B．protect the rose from harm |
| C．symbolize reduced love |
| D．cause acute suffering |
It can be inferred from the passage that a metaphor is _______.
| A．difficult to understand | B．rich in meaning |
| C．simple to use | D．perfect in form |
The main idea of this passage is that ________.
| A．love is a rose in metaphor |
| B．a rose is a good image in poetry |
| C．a metaphor is a great poetic device |
| D．a poet should be careful to use a metaphor |
Dear Teresa Silva,
The official of the university has reported to us that you are an English major who meets the high standards for membership in Sigma Tau Delta. As is known, Sigma Tau Delta was founded in 1924 at Dakota Wesleyan University. It is an international collegiate honor society for students of English. It presently has over 850 chapters in the United States, Europe, the Middle East, and the Caribbean. Over 9,000 new members are admitted into the organization annually.
Sigma Tau Delta’s purpose is to promote literature and writing and to advance the study of the written word. Members gather annually in the spring at the international meeting to present papers and share experiences and ideas within the English subject. The Society offers tens of thousands of dollars in scholarships, awards, as well as publication chances in its journals The Rectangle and The Sigma Tau Delta Review.
It is our pleasure if you can complete the application for Sigma Tau Delta membership. If you would like to be included in this spring’s induction (入会) ceremony, please complete the application form, and include amount to cover both local and international fees. Your completed form must be received by date to be considered for the upcoming induction ceremony.
We congratulate you on your outstanding academic record and hope you will join us as a Sigma Tau Delta member. If you want to get more information, please visit our website www.sigmataudelta.org, or give us a call. The phone number is 583-2864.
Sincerely,
Emily Lister According to the passage, Sigma Tau Delta ______.
| A．deals with language learning |
| B．opens its door to all the students of English |
| C．changes its members every year |
| D．mainly takes charge of scientific publications |
At the annual meeting, members of Sigma Tau Delta have the chance to ______.
| A．meet all the chapter leaders |
| B．receive tens of thousands of dollars |
| C．share experiences and views |
| D．choose a particular subject as a major |
This passage is basically a letter of _____.
| A．introduction | B．congratulation | C．thanks | D．invitation |
Made In The USA: An Export Boom
In his State of the Union address two years ago, President Obama argued that in order to recover from the economic recession, one of the few things the U．S. needed to do was to export more goods around the world. That night, the president unveiled a new goal: to double U．S. exports over the next five years. It would be an increase that the president said would “support two million jobs in America.”
Most economists dismissed the promise at the time as something unrealistic, but two years later, the U．S. is on pace to meet that goal. American exports are up 34 percent since the president gave that speech, and the number continues to rise.
Competitive In A Global Market
Marlin Steel, a metal working business in Baltimore, makes parts that ship all across the world.“We export to 36 countries，” owner Drew Greenblatt tells All Things Considered Host Guy Raz.“We're working around the clock, and we're growing.”
It's not just advanced manufacturing exports on the rise, but pork, cattle and all kinds of agricultural exports are up as well. Even American craft beer has found an export market.
Flying Dog CEO Jim Caruso says that increasingly, people all over the world are trying the beer from the Maryland－based brewery. Caruso says，“Even in those top beer－producing countries, a competitive American product is finding a market.”
Services Are Exports, Too
Another place exports are coming from is New York City—in particular, the 30th floor of a Manhattan skyscraper on 5th Avenue and 52nd Street. That's where the consulting firm Kurt Solomon lies. It doesn't actually produce a product for export; it provides management advice and strategy.
“Four out of every five Americans is now employed in the service industry，” the nation's top trade official, Ron Kirk says, “Services are a significant part of our exports, and make up about a quarter of our exported goods.” These services can include everything from legal consulting, finance, information technology and even engineering.
And There Are Other Factors
So why has there been an increase of more than 30 percent for exports in almost everything? Part of the increase, at least for the manufacturing side, is due to better technology, says Tyler Cowen, an economist.“A lot of it is being driven by smart machines，” he tells Raz，“The U．S. has high wage rates, which is a disadvantage, but if machines are doing a lot of the work, that doesn't matter.”
China factors a lot in America's export economy, too.“Wages in China have been going up as the country becomes more productive. Thus China is losing the cheap labor advantage it has held for some time.” Cowen says.
Will Jobs Grow, too?
“Companies have become more productive by dismissing workers and lowering costs.”Cowen says.“So I don't view exporting as a way of creating a very large number of jobs, but it will create more profits.”
So not every business or worker is necessarily benefiting from the export boom in the U．S., and Cowen says that could ultimately lead to a polarization(两极) of economic outcomes.
Made In the USA: An Export Boom
| Outline |
Details |
|
| The purpose of increasing exports |
*To help America make a (1)______ from the economic recession *To help raise the nation's (2)______ rate |
|
| The current situation |
*American exports have risen (3)______ thirty－four percent up to now *There has been an increase in exports in everything *The export boom does not necessarily (4)______ every business or worker |
|
| (5)______ contributing to the export boom |
(6)______products |
Even in those top beer－producing countries, people try craft beer from Flying Dog, a brewery (7)______ in Maryland |
| Various products |
A variety of products are provided around the world，services (8)______ for 25% |
|
| Lower costs |
*(9)______ take the place of labor, helping companies reduce wages *China, who used to take (10)______ of cheap labor, has given way to America in exports to some extent because of its increasing production |
If California were not already so famous for Sillicon Valley(硅谷) and Hollywood, it might be well－known for the groups of water－technology firms in its San Diego County. The reverse－osmosis (RO) spiral module, the technique that supports turning seawater and waste－water into drinkable stuff, began in San Diego in 1964. Today dozens of firms in the area supply many of the world's approximately 13，000 RO plants in places from the Persian Gulf and Israel to Australia and China.
Southern California itself, however, has not so far been a big user of its own technology. This is surprising, given that the whole American south－west faces a water problem. But now as the climate gets warmer and the population increases, there is more agreement that the existing infrastructure, consisting of vast pipes that carry water from the Sacramento Delta in the north and the Colorado River in the east, will not be enough. In places such as San Diego, which has inadequate and salty groundwater and currently imports 90% or its water, the answers must be greater conservation, reusing as much water as possible, and getting most of the rest from the sea.
The first part, conservation, has been widely accepted by the public. San Diego today uses less water with a larger population than it did in 1989, the year water consumption peaked. The second part, water recycling has been a hard sell, because of an unpleasant factor. Americans still use the term “toilet－to－tap” for recycling, even though properly treated waste－water is nowadays completely clean. Singapore made its programme acceptable in part by renaming it as NEWater.
This is where desalination comes in, which means taking the salt out of salt water. A firm called Poseidon Resources is now close to building the biggest desalination plant in America behind a power station by the beach in Carlsbad. The power plant sucks in 304m gallons of seawater a day for cooling, so Poseidon plans to change 104m gallons a day by using the RO spiral module.
Lots of people like the idea. Once fully running in 2015, the plant could produce 10% of the region's water. And there are plans for more desalination plants. Many places would need to take much less water from the endangered Colorado River. But a few people hate it a lot. Joe Geever, an expert in biology, says desalination uses too much energy and that Poseidon plant would kill too much sea life. He understands that there is a role for desalination, he says, but would rather not have it right there, right now, and on this scale.Which of the following is WRONG about the RO spiral module according to the passage?
| A．This technology is not widely used in its birthplace. |
| B．Today there are about 13，000 RO plants in the Persian Gulf, Israel, Australia and China. |
| C．This technology can be used in desalination plants to make sea water drinkable. |
| D．It is a promising water treatment technology welcomed by a lot of people. |
How many solutions to the water problem in San Diego are mentioned in the article?
| A．2. | B．3. | C．4. | D．5. |
What can we infer from the article?
| A．The Colorado River is the main water source for California. |
| B．Americans still use the term “toilet－to－tap” for recycling water. |
| C．NEWater serves as a brand for recycled clean water in Singapore. |
| D．Poseidon Resources stands for the power station by the beach in Carlsbad. |
What is Joe Geever's attitude toward building a large desalination plant at present?
| A．Supportive. | B．Negative. | C．Optimistic. | D．Vague. |
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