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题型:阅读理解 题类:真题 难易度:普通

 
Their cheery song brightens many a winter's day. But robins are in danger of wearing themselves out by singing too much. Robins are singing all night一as well as during the day, British-based researchers say.
David Dominoni, of Glasgow University, said that light from street lamps, takeaway signs and homes is affecting the birds' biological clocks, leading to them being wide awake when they should be asleep.
Dr Dominoni, who is putting cameras inside nesting boxes to track sleeping patterns, said lack of sleep could put the birds' health at risk. His study shows that when robins are exposed to light at night in the lab, it leads to some genes being active at the wrong time of day. And the more birds are exposed to light, the more active they are at night.
He told people at a conference, "There have been a couple of studies suggesting they are increasing their song output at night and during the day they are still singing. Singing is a costly behaviour and it takes energy. So by increasing their song output, there might be some costs of energy."
And it is not just robins that are being kept awake by artificial light. Blackbirds and seagulls are also being more nocturnal. Dr Dominoni said, "In Glasgow where I live, gulls are a serious problem. I have people coming to me saying `You are the bird expert. Can you help us kill these gulls?'.During the breeding(繁殖)season, between April and June, they are very active at night and very noisy and people can't sleep."
Although Dr Dominoni has only studied light pollution, other research concluded that robins living in noisy cities have started to sing at night to make themselves heard over loud noise.
However, some birds thrive(兴旺)in noisy environments. A study from California Polytechnic University found more hummingbirds in areas with heavy industrial machinery. It is thought that they are capitalising on their predators(天敌)fleeing to quieter areas.


(1)、According to Dr Dominoni's study, what cause robins to sing so much?

A、The breeding season.  B、The light in modern life C、The dangerous environment. D、The noise from heavy machinery.
(2)、What is the researchers' concern over the increase of birds' song output?

A、The environment might be polluted. B、The birds' health might be damaged. C、The industry cost might be increased. D、The people's hearing might be affected.
(3)、What does the underlined word "nocturnal" in Paragraph 5 mean?

A、Active at night.     B、 Inactive at night. C、Active during the day. D、Inactive during the day.
(4)、Why do some birds thrive in noisy environments?

A、Because there are fewer dangers. B、Because there is more food to eat. C、Because there is less light pollution D、Because there are more places to take shelter.
举一反三
阅读理解

SM Card Cutter

Change regular SM cards to smaller SIM cards.

    Did you know you can cut a regular size phone SIM card to a smaller size SM card and it will still work?This tool will help you do it.Just stick a SIM card in it,press it down like a stapler(订书机).A perfectly shaped smaller SIM is there.I've used it many times when swapping SIMs from one phone to another.

03/7/17-Mark Frauenfelder

Profi Cheese Slicer

    Uses a thin wire to slice up to medium-hard cheeses in four inch sections.

    I may own every cheese slicer ever made.I prefer a wire type cheese cutter so I can cut slices that work well on a piece of bread and sandwich.

    This cheese slicer is great for both tasks.It even has adjustable tension on the two cutting wires.A point of information: I did break a wire cutting a very hard piece of cheese with black pepper.Good news,the wire is replaceable,and I was able to purchase new wires to fix it.Maybe best to use on softer cheeses.Lessons learned.But, highly recommended for every other use except for those extremely hard cheeses.

03/6/17-Kent Bames

Ash Bucket(桶子)

Bucket with lid keeps your fireplace(壁炉)clear of ashes.

    I purchased this ash bucket recommended by my friend and have found it invaluable.Previously I had an old bucket that got left outside and usually filled up with rain and became a mess to clean.This ash bucket has a raised bottom and thermal insulation(隔热层)to prevent any accidental hot coals in your ash to damage your floor or cause a fire.You can store this bucket indoors since the lid is nice and tight.

03/3/17-Seth Wilson

阅读理解

Plastic-Eating Worms

    Humans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.

    Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms' chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later the films had lost 13% of their mass — apparently broken down by enzymes (酶) from the worms' stomachs. Their findings were published in Current Biology in 2017.

    Federica Bertocchini, co-author of the study, says the worms' ability to break down their everyday food — beeswax — also allows them to break down plastic. “Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well,” she explains, “The wax worm evolved a method or system to break this bond. ”

    Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?

    Bertocchini agrees and hopes her team's findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process — not simply “millions of worms thrown on top of the plastic.”

阅读理解

    Recently a new study has been carried out. It shows students who write notes by hand during lectures perform better on exams than those who use laptops.

    Students are increasingly using laptops for note-taking because of speed and legibility (清晰度). But the research has found laptop users are less able to remember and apply the concepts they have been taught.

    Researchers performed experiments that aimed to find out whether using a laptop increased the tendency to make notes “mindlessly” by taking down word for word what the professors said.

    In the first experiment, students were given either a laptop or pen and paper. They listened to the same lectures and were told to use their usual note-taking skills. Thirty minutes after the talk, they were examined on their ability to remember facts and on how well they understood concepts.

    The researchers found that laptop users took twice as many notes as those who wrote by hand. However, the typists performed worse at remembering and applying the concepts. Both groups scored similarly when it came to memorizing facts.

    The researchers' report said, “While more notes are beneficial, if the notes are taken mindlessly, as is more likely the case on a laptop, the benefit disappears.”

    In another experiment aimed at testing long-term memory, students took notes as before but were tested a week after the lecture. This time, the students who wrote notes by hand performed significantly better on the exam.

    These two experiments suggest that handwritten notes are not only better for immediate learning and understanding, but that they also lead to superior revision in the future.

阅读理解

    Here is some general information about Edison Elementary School. For more information, you can visit our website which is printed on the cover.

    Attendance:

    Please contact the office at 480-472-5282 if your child is going to be absent.

    Renaissance Reading:

    The Accelerated Reader (AR) Program is a computerized reading enrichment program that combines great children's literature with computer skills. As an individualized reading program, it is designed to motivate students to read more and to read good literature. Students of different abilities can use this program. It is not a competitive program but one that improves any student's reading ability.

    Here is how it works. Students select books in their reading range from our Accelerated Reader Selection and read it at their own pace. Once the student has completed the book, he/she is ready to take an AR quiz. Each quiz consists of 5, 10, or 20 multiple choice comprehensive questions about the book.

    After taking the quiz, the computer shows the student how many questions he/she answered correctly, shows the correct answers for missed questions, and praises the students' efforts with an on­screen personalized message. Passing the quiz assures the teacher and the parent that the child actually read and understood the book. Each student tests independently—reading the quiz questions himself/herself.

    The computer keeps track of reading points, books, and average test scores, as well as other data. A student may test on a book only once and should, therefore, have thoroughly read and understood the contents before taking the quiz. Each student is responsible for reading the screen to be sure the quiz, by title and author, is the correct one he/she wishes to take.

    Students are recognized for their accomplishments with praise from the teachers and special recognition at the classroom level when individual and/or classroom goals are met.

    PTO:We have an active Parent Teacher Organization. They have monthly meetings, check the calendar for the meeting times and places.

阅读理解

    Idioms are one of the hardest parts of learning a language. For those of you who don't know, an idiom is a phrase which has a meaning, but the meaning is not clear from the words themselves. If you translate an idiom word for word, it sometimes makes no sense at all. They are like puzzles and even native speakers can get confused when someone uses a phrase that they've never heard of.

With that in mind, here are five common English idioms that you can use in a variety of Situations.

⒈Get your act together (Meaning: you need to improve your behaviour/work)

    This might be something your teacher says to you if you score badly in an exam or if you misbehave in class. You can also use it to talk about people in general. For example, if your friend is being mean or nasty for no reason, then you can tell them that they need to get their act together.

⒉Pull yourself together (Meaning: calm down)

    This is a somewhat impolite way of telling someone that they are overreacting and that they need to relax. Only use this if you think the person you are speaking to is getting upset over something insignificant. If your friend tells you that their close relative has died, it is NOT the time to tell them to pull themselves together.

⒊I'm feeling under the weather (Meaning: I'm sick)

    Yes, it's longer and more difficult to say than 'I'm sick', but if your English teacher asks you why you haven't done your homework, he or she is more likely to forgive you if you say that you were feeling under the weather. You may not have done your English homework, but your teacher might be impressed that you know how to make eloquent excuses in a foreign language.

⒋It's a piece of cake (Meaning: it's easy)

    I don't know why this means what it does, but sometimes you just have to accept that English people use weird phrases.

⒌Break a leg (Meaning: good luck!)

    This is perhaps one of the most confusing yet well-known English idioms. If someone says this to you, do not take offence or think they are threatening you; they are just wishing you luck. It is most often used for people wishing success to actors and actresses before they perform on the stage, but it can be said in other situations, too.

    All in all, learning a new language can be challenging. It's definitely not a piece of cake, especially when there are so many confusing idioms. However, with enough hard work and interest, you will succeed in no time. Break a leg!

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