People typically wash their hands seven times a day in the United States, but they do it at a far higher temperature than is necessary to kill germs (病菌) , a new study says. The energy waste is equivalent to the fuel use of a small country.
Amanda R. Carrico, a research assistant professor at the Vanderbilt Institute for Energy and Environment in Tennessee, told National Geographic that hand washing is often “a case where people act in ways that they think are in their best interest, but they in fact have inaccurate beliefs or outdated perceptions.”
Carrico said, “It’s certainly true that heat kills bacteria, but if you were going to use hot water to kill them it would have to be way too hot for you to tolerate.”
Carrico said that after a review of the scientific literature, her team found “no evidence that using hot water that a person could stand would have any benefit in killing bacteria.” Even water as cold as 40°F (4.4°C) appeared to reduce bacteria as well as hotter water, if hands were scrubbed, rinsed（冲洗）and dried properly.
Using hot water to wash hands is therefore unnecessary, as well as wasteful, Carrico said, particularly when it comes to the environment. According to her research, people use warm or hot water 64 percent of the time when they wash their hands. Using that number, Carrico’s team calculated a significant impact on the planet.
“Although the choice of water temperature during a single hand wash may appear unimportant, when multiplied by the nearly 800 billion hand washes performed by Americans each year, this practice results in more than 6 million metric tons of CO2 equivalent emissions annually,” she said.
The researchers published their results in the July 2013 issue of International Journal of Consumer Studies. They recommended washing with water that is at a “comfortable” temperature, which they noted may be warmer in cold months and cooler in hot ones. What’s the meaning of what Carrico told National Geographic in the second paragraph?
| A．People are more concerned about their health and begin to wash their hands. |
| B．It’s important for people to wash their hands to keep healthy. |
| C．Generally, people’s hand washing behaviors and perceptions are not correct. |
| D．People like washing their hands very much. |
The figures in the sixth paragraph are used to show that __________.
| A．using hot water to wash hands has a bad influence on our planet. |
| B．air pollution has become more and more serious. |
| C．using hot water to wash hands is a waste of energy. |
| D．people should pay more attention to the environment around us. |
This passage is organized in the pattern of __________.
| A．fact and opinion |
| B．cause and effect |
| C．definition and classification |
| D．time and events |
What can we learn from the passage?
| A．It’s necessary and useful for people to wash their hands frequently every day. |
| B．We can wash our hands with water that is at a “comfortable” temperature. |
| C．Using cold water to wash hands is necessary and much healthier. |
| D．Hot water can’t kill germs. |
What’s on Your Pet’s Mind?
In 1977, Irene Pepperberg of Harvard University began studying what was on another creature’s mind by talking to it. Her first experiments began with Alex. Alex was a one-year-old African grey parrot and Irene taught him to produce the sounds of the English language. “I thought if he learned to communicate, I could ask him questions about how he sees the world.”
At the time, most scientists didn’t believe animals had any thoughts. They thought animals were more like robots but didn’t have the ability to think or feel. Of course, if you own a pet you probably disagree. But it is the job of a scientist to prove this and nowadays more scientists accept that animals can think for themselves.
“That’s why I started my studies with Alex,” Irene said, “Some people actually called me crazy for trying this.”
Nowadays, we have more and more evidence that animals have all sorts of mental abilities. Sheep can recognize faces. Chimpanzees (黑猩猩) use a variety of tools and even use weapons to hunt. And Alex the parrot became a very good talker.
Thirty years after the Alex studies began. Irene was still giving him English lessons up until his recent death. For example, if Alex was hungry he could say “want grape”. Alex could count to six and was learning the sounds for seven and eight. “He has to hear the words over and over before he can correctly say them.” Irene said, after pronouncing “seven” for Alex a few times in a row. Alex could also tell the difference between colors, shapes, sizes, and materials (e.g. wood and metal). Before he finally died, Alex managed to say “seven”.
Another famous pet that proved some animals have greater mental skills was a dog called Rico. He appeared on a German TV game show in 2011. Rico knew the names of 200 different toys and easily learned the names of new ones. When Rico became famous, many other dog owners wanted to show how clever their pets were. Another dog called Betsy could understand 300 words.
One theory for dogs’ ability to learn a language is that they have been close companions to humans for many centuries and so their ability to understand us is constantly evolving (进化). While animals can’t do what humans do yet, some scientists believe that examples like Alex and Rico prove that evolution develops intelligence, as well as physical appearance.Irene wanted to find out __________.
| A．what a parrot thinks |
| B．why a parrot can speak |
| C．how parrots make sounds |
| D．if parrots speak English |
Alex learnt new words by __________.
| A．singing them |
| B．reading them |
| C．writing them |
| D．rehearing them |
The two dogs mentioned in the article could _______.
| A．understand some words |
| B．recognize strange voices |
| C．copy human gestures |
| D．tell different colors |
The article concludes that ___________.
| A．our pets understand what we say |
| B．dogs may speak to humans one day |
| C．humans are related to chimpanzees |
| D．mental ability can evolve in animals |
I watch documentaries, not movies．I read history books, not fiction．I use every free moment to accomplish one of the tasks on my never-ending checklist, and I am completely filled with thoughts of productivity．An hour sleeping is an hour wasted．And like the rest of 21st century America, I like it．But this fixation on productivity is increasingly destroying character and transforming men into robots.
New York Times columnist David Brooks warned American University students of this cultural decline in a speech．“We cut off all things spiritual and emotional in a competitive urge to stand out”, he said, “The pressure to succeed professionally, to acquire skills, to do the things you need to do to succeed in an information age economy really became the overwhelming（难以应付的） pressures, and it sort of eclipses the thinking about character and morality.”
Many students happily go to college, viewing it as a next step on their rise to professional achievement．Forcing as many success-building activities into their schedules as they can, they enjoy keeping busy with little sleep．“Today’s outstanding kids are likely to spend their afternoons and weekends shuttling from one skill-improving activity to the next,” Brooks wrote in an article, “We fear failure more than we desire success.”
A century ago, college was about character building．Today, our characters are in decline．We are experts on economics, material things and professional skills．We fail to discuss and understand relationships, emotions and all things spiritual．
Philosopher Karl Popper divided the world into two categories: Clocks and Clouds．Clock problems are those that can be taken apart, examined and solved through deductive reasoning（演绎推理）．Clouds cannot be taken apart．Cloud problems represent whole systems that need to be understood in a different way.
“When we have a Cloud problem, we try to turn it into a Clock problem,” Brooks said．And in a reason-centered culture, adding titles to one’s resume becomes a trend．At American University, 85 percent of seniors (and 89 percent of business majors) graduate with at least one practical experience which is often helpful to a student’s future career, but can sometimes draw focus away from academics.
To prevent the death of man’s character, Brooks urges rediscovering our human natures through falling in love．And by love he means love for a task, job, or another person．“Synchronicity is key to happiness,” he said．Rather than crazily increasing our long lists of accomplishments, we need to lose ourselves in what we do, and success will come on its own.From Paragraph 1, we can learn that people __________.
| A．are controlled by time |
| B．are keen on reading books |
| C．are changing their characters |
| D．are eager to achieve more |
In Paragraph 2, the underlined word “eclipses” means _________.
| A．deletes | B．weakens |
| C．worsens | D．emphasizes |
The last paragraph mainly tells us that __________．
| A．love is more important than focus |
| B．the focus on human natures counts |
| C．more work contributes to happiness |
| D．success comes from devotion to work |
The purpose of this passage is to __________.
| A．bring awareness to character building |
| B．stress the importance of productivity |
| C．warn about the pressure to seek success |
| D．criticize students’ desire for achievements |
Everyone procrastinates．We put things off because we don’t want to do them, or because we have too many other things on our plates．Putting things off—big or small—is part of being human.
But procrastination does have consequences．When your procrastination leaves you feeling discouraged, it is time to take action, and one of the best ways to get rid of it is to make an un-schedule.
An un-schedule is a weekly calendar of all the ways in which your time is already accounted for．You consider not only your timed commitments such as classes and meetings, but also your untimed activities such as meals, exercise, time with friends, and the like．Once you have made your un-schedule, you may be able to see your time is often filled with more activities than you realize, for instance, that you really don’t have five hours to spend writing on the night before your paper is due．Procrastinators’ views of time tend to be unrealistic, and the un-schedule can help you outline a realistic plan．By planning accordingly, you will not only get a better night’s sleep, you may also end up with a better paper．
The un-schedule might also be a good way to get started on a larger project, such as a term paper or an honors paper．You may think that you have “all semester” to get the writing done, but if you really map out how much time you have available to write on a daily and weekly basis, you will see that you need to get started sooner, rather than later．In addition, the un-schedule may reveal especially busy weeks or months, which will help you budget time for long-term projects.
Perhaps most importantly, the un-schedule can help you examine how you spend your time．You may be surprised at how much time you spend watching television, and decide to make a change．It’s especially important that you build time for fun activities into your un-schedule．Otherwise, you will procrastinate in order to steal time for relaxation.
You can also use the un-schedule to record your progress towards your goal．Reward yourself for your small successes．Seeing what you’ve achieved will help reinforce（强化）the productive behavior, and you will feel more motivated in the following process.
As you explore ways to conquer procrastination, don’t expect overnight transformation．You developed the habit over a long time; you aren’t going to stop magically．But you can change the behavior, bit by bit．If you start to make an un-schedule now, you will eventually develop new habits．
From Paragraph 2, we can know that procrastinators __________.
| A．usually have sleeping problems |
| B．tend to be unrealistic in daily life |
| C．spend more time in doing exercise |
| D．often fail to notice untimed activities |
Which of the following statements best reflects an un-schedule?
| A．“Now I have more time for fun.” |
| B．“I can start my big project later.” |
| C．“I’ll treat myself to a movie for my progress.” |
| D．“I’m going to have more time to finish my paper.” |
According to the writer, people need to make an un-schedule because of their __________．
| A．interests in doing things differently |
| B．determination to try out new things |
| C．inability to manage time properly |
| D．lack of concentration on a project |
The author writes the passage to __________.
| A．show concerns |
| B．offer suggestions |
| C．express dissatisfaction |
| D．make comments |
Ever walked to the shops only to find, once there, you’ve completely forgotten what you went for? Or struggled to remember the name of an old friend? For years we’ve accepted that a forgetful brain is as much a part of ageing as wrinkles and grey hair．But now a new book suggests that we’ve got it all wrong.
According to The Secret Life of the Grown-up Brain, by science writer Barbara Strauch, when it comes to the important things, our brains actually get better with age．In fact, she argues that some studies have found that our brain hits its peak between our 40s and 60s—much later than previously thought.
Furthermore, rather than losing many brain cells as we age, we retain them, and even produce new ones well into middle age．For years it’s been assumed that brain, much like the body, declines with age．But the longest, largest study into what happens to people as they age suggests otherwise.
This continuing research has followed 6,000 people since 1956, testing them every seven years．It has found that on average, participants performed better on cognitive(认知的) tests in their 40s and 50s than they had done in their 20s．Specifically, older people did better on tests of vocabulary, verbal memory (how many words you can remember) and problem solving.
Where they performed less well was number ability and perceptual speed—how fast you can push a button when ordered．However, with more complex tasks such as problem-solving and language, we are at our best at middle age and beyond．In short, researchers are now coming up with scientific proof that we do get wiser with age.
Neuroscientists are also finding that we are happier with ageing．A recent US study found older people were much better at controlling and balancing their emotions．It is thought that when we’re younger we need to focus more on the negative aspects of life in order to learn about the possible dangers in the world, but as we get older we’ve learned our lessons and are sub-consciously aware that we have less time left in life: therefore, it becomes more important for us to be happy．Barbara Strauch probably agrees that ______．
| A．the young are better at handling important things |
| B．people’s brains work best between their 40s and 60s |
| C．ageing leads to the decline of the function of the brain |
| D．wrinkles and grey hair are the only symbols of ageing |
The continuing research has found older people perform better on _____ .
| A．vocabulary tests |
| B．number ability |
| C．perceptual speed |
| D．body balance |
People are happier with age because ______.
| A．they learn to value the time left |
| B．they know how to share feelings |
| C．they cannot focus on negative aspects |
| D．they do not realize the possible dangers |
What is the main idea of the passage?
| A．People get wiser with age． |
| B．People get more forgetful with age． |
| C．People get happier with age． |
| D．People get more self-aware with age． |
阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项
Summer is slipping away from me．Some days, it makes me want to cry．Other days, I feel a sense of expectation within me just thinking about fall that makes me want to burst．Tonight, all five of us were in the family room doing our own things.
At this moment, my littlest kid is my number one trouble and my number one joy．He has a tooth on the way and although it’s such a tiny thing, it’s causing so much grief．I’m holding him a lot and I’m not going to lie．I live for his afternoon nap(小睡) so I’m able to actually get dressed and use the restroom.
The big E is starting school soon．The other day, I found myself a bit depressed about the end of summer and the beginning of another school year．I looked out of our front window with eyes that were heavy and a bit teary．Then, I suddenly realized just how silly this end of summer depression of mine is．I can’t change time．But, I can change my emotions and my thoughts．I decided not to spend my final days of summer vacation walking around with a sad face．I decided to hug the last few days of summer and remind myself that before I know it, we will be back in our school routine and all will go well.
This week we plan on meeting teachers．I’m taking my girl to have her nails done before her first day of kindergarten．We want to bake a few dozen cookies．We’ll take our evening walks as usual and stay up late．And last but not least, I’ll get school clothes ready, I’ll pack lunches and write lunch notes, we’ll read “The Kissing Hand,” like we normally do, and I’ll tuck(掖好被子) my third grader and kindergartener in their little beds before the big first day.
Thank you summer, you’ve been warm and wonderful, you’ve been sweet and sticky, you’ve been refreshing and exactly what we need．And your sunsets have been amazing, so thank you．According to Paragraph 1, the author ______.
| A．feels excited |
| B．has mixed feelings |
| C．feels worried |
| D．has bad feelings |
How will the author spend the final days of the summer vacation?
| A．Live a simple life. |
| B．Stay at home and relax herself. |
| C．Treasure the vacation. |
| D．Walk around with a depressed face. |
From the passage, we can learn that the author ______.
| A．is fond of reading novels |
| B．has two annoying children |
| C．often takes evening walks |
| D．has no time to get dressed |
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