Like clockwork, nearly every fourth February includes one extra day. February 29th, otherwise known as Leap Day, isn’t exactly a holiday. Instead, it’s there to keep your calendar consistent with the earth’s rotation (旋转) around the sun.
According to History, com, Roman emperor Julius Caesar is the “father” of Leap Year. Until he came along, people used a 355-day calendar, which was 10.25 days shorter than the solar year. Roman officials were supposed add an extra month every now and then to keep the seasons exactly where they should be. But that didn’t work out all that well. When special occasions started shifting into different seasons around 45 BCE, Caesar consulted with astronomers and decreed (下令) that the empire should use a 12-month, 365-day calendar, which he named after himself, Caesar’s Julian calendar included a Leap Day every four years.
Though Leap Day keeps your calendar in line with the earth’s rotation around the sun, it causes a different kind of problem for leapsters. When should these February 29th babies celebrate their birthdays during the other three-quarters of their lives? Some party on February 28th, while others prefer a two-day celebration that spans the last day of February and the first day of March.
Leap Day can be a nuisance in the legal system. In 2006, a court in Massachusetts was deciding whether criminal John Melo could be released a day early since his 10-year sentence included a Leap Day. In the case, the judge decided that since the man was sentenced to prison for years, not days. Leap Day didn’t make a bit of difference.
Though a few timekeepers have pushed for calendars that don’t include Leap Day, almost all astronomers and societies agree that Leap Day is the best method to keep the calendar on track.
1.Why was Leap Day created?
A.To celebrate special occasions. B.To honor Emperor Julius Caesar.
C.To keep pace with the solar year. D.To keep track of all the seasons.
2.What is the problem with the birthday celebration of February 29th babies?
A.It is sometimes delayed. B.It lasts at least two days.
C.It has to be held every other year. D.It may take place on different dates.
3.What does the underlined word “nuisance” in Paragraph 4 mean?
A.Joke. B.Topic.
C.Trouble. D.Mistake.
4.what is the attitude of most astronomers towards Leap Day?
A.Critical. B.Supportive.
C.Doubtful. D.Cautious.
高三英语阅读理解中等难度题
Like clockwork, nearly every fourth February includes one extra day. February 29th, otherwise known as Leap Day, isn’t exactly a holiday. Instead, it’s there to keep your calendar consistent with the earth’s rotation (旋转) around the sun.
According to History, com, Roman emperor Julius Caesar is the “father” of Leap Year. Until he came along, people used a 355-day calendar, which was 10.25 days shorter than the solar year. Roman officials were supposed add an extra month every now and then to keep the seasons exactly where they should be. But that didn’t work out all that well. When special occasions started shifting into different seasons around 45 BCE, Caesar consulted with astronomers and decreed (下令) that the empire should use a 12-month, 365-day calendar, which he named after himself, Caesar’s Julian calendar included a Leap Day every four years.
Though Leap Day keeps your calendar in line with the earth’s rotation around the sun, it causes a different kind of problem for leapsters. When should these February 29th babies celebrate their birthdays during the other three-quarters of their lives? Some party on February 28th, while others prefer a two-day celebration that spans the last day of February and the first day of March.
Leap Day can be a nuisance in the legal system. In 2006, a court in Massachusetts was deciding whether criminal John Melo could be released a day early since his 10-year sentence included a Leap Day. In the case, the judge decided that since the man was sentenced to prison for years, not days. Leap Day didn’t make a bit of difference.
Though a few timekeepers have pushed for calendars that don’t include Leap Day, almost all astronomers and societies agree that Leap Day is the best method to keep the calendar on track.
1.Why was Leap Day created?
A.To celebrate special occasions. B.To honor Emperor Julius Caesar.
C.To keep pace with the solar year. D.To keep track of all the seasons.
2.What is the problem with the birthday celebration of February 29th babies?
A.It is sometimes delayed. B.It lasts at least two days.
C.It has to be held every other year. D.It may take place on different dates.
3.What does the underlined word “nuisance” in Paragraph 4 mean?
A.Joke. B.Topic.
C.Trouble. D.Mistake.
4.what is the attitude of most astronomers towards Leap Day?
A.Critical. B.Supportive.
C.Doubtful. D.Cautious.
高三英语阅读理解中等难度题查看答案及解析
Every fall, like clockwork, Linda Krentz of Beaverton, Oregon, felt her brain go on strike. “I just couldn’t get going in the morning,” she says. “I’d get depressed and gain 10 pounds every winter and lose them again in the spring.” Then she read about seasonal affective disorder, a form of depression that occurs in fall and winter, and she saw the light-literally. Every morning now she turns on a specially constructed light box for half an hour and sits in front of it to trick her brain into thinking it’s still enjoying those long summer days. It seems to work.
Krentz is not alone. Scientists estimate that 10 million Americans suffer from seasonal depression and 25 million more develop milder versions. But there’s never been definitive proof that treatment with very bright lights makes a difference. After all, it’s hard to do a double-blind test when the subjects can see for themselves whether or not the light is on. That’s why nobody has ever separated the real effects of light therapy from placebo(安慰剂) effects.
Until now. In three separate studies published last month, researchers report not only that light therapy works better than a placebo but that treatment is usually more effective in the early morning than in the evening. In two of the groups, the placebo problem was resolved by telling patients they were comparing light boxes to a new anti-depressant device that emits negatively charged ions. The third used the timing of light therapy as the control.
Why does light therapy work? No one really knows. “Our research suggests it has something to do with shifting the body’s internal clock,” says psychiatrist Dr. Lewey. The body is programmed to start the day with sunrise, he explains, and this gets later as the days get shorter. But why such subtle shifts make some people depressed and not others is a mystery.
That hasn’t stopped thousands of winter depressives from trying to heal themselves. Light boxes for that purpose are available without a doctor’s prescription. That bothers psychologist Michael Terman of Columbia University. He is worried that the boxes may be tried by patients who suffer from mental illness that can’t be treated with light. Terman has developed a questionnaire to help determine whether expert care is needed.
In any event, you should choose a respectable manufacturer. Whatever product you use should emit only visible light, because ultraviolet light damages the eyes. If you are photosensitive, you may develop a rash. Otherwise, the main drawback is having to sit in front of the light for 30 to 60 minutes in the morning. That’s an inconvenience many winter depressives can live with.
1.What is the probable cause of Krentz’s problem?
A. An unexpected gain in body weight.
B. Unexplained impairment of her nervous system.
C. Weakening of her eyesight with the setting in of winter.
D. Poor adjustment of her body clock to seasonal changes.
2.By saying that Linda Krentz saw the light” (Line 4, Para. 1), the author means that she _______.
A. learned how to lose weight
B. realized what her problem was
C. came to see the importance of light
D. felt sleepy and blue
3.What is the CURRENT view concerning the treatment of seasonal depression with bright lights?
A. Its effect remains to be seen.
B. It serves as a kind of placebo.
C. It proves to be an effective therapy.
D. It hardly produces any effects.
4.What is psychologist Michael Terman’s major concern?
A. Winter depressives will be addicted to using light boxes.
B. No mental patients would bother to consult psychiatrists.
C. Inferior light boxes will emit harmful ultraviolet lights.
D. Light therapy could be beyond the tolerance of certain mental patients.
高三英语阅读理解中等难度题查看答案及解析
Many subway stations, including the one near our school, ________ at present for a better transport in the city.
A. are constructing B. are being constructed C. is constructing D. is being constructed
高三英语单项填空中等难度题查看答案及解析
“All men are created equal” is one idea that nearly every American would agree upon.36 they sometimes betray the idea in their daily lives, they have a deep faith37 in some fundamental way no one is born superior to anyone else.
In the early years of American history, because titles of nobility(贵族) were forbidden, no38 class system developed in the United States. Firmly believing that being born into a lower class would not39 them from success and they would have a better chance in America, thousands of immigrants 40 to leave the European societies, where their 41 in life was determined42 by the social class into which they were born. It was because the dreams of many of there immigrants were 43 in their new country, though there might be44 in some situations, that Americans came to believe in equality of opportunity.
Americans do not mean that everyone should be45 equal when they say they believe in equality of opportunity.46 , they do mean that each person should have an equal chance for success. Abraham Lincoln once said, “We wish to47 the humblest(最微贱的) man an equal chance to get rich with everybody else. When one starts poor, free society is48 that he knows he can 49 his condition.”
However, competition is the price to be 50 for his equality of opportunity. Americans match their energy and intelligence against that of others in a competitive contest for success, because they believe competition51 the best in any person. Indeed, the pressure of competition causes an American to be 52 , but it also places a constant emotional stress on him. In fact, in a society that gives so much53 to those “winners”, 54 does not compete successfully for whatever reason never55 into it as well as those who do.
1.A.Since B.As C.Although D.Because
2.A.what B.that C.as D.which
3.A.normal B.moral C.formal D.general
4.A.benefit B.prevent C.save D.limit
5.A.forced B.required C.chose D. looked forward
6.A.place B.meaning C.function D.purpose
7.A.slightly B.largely C.originally D.publicly
8.A.come true B.ruined C.succeeded D.realized
9.A.excitements B.expectations C. exceptions D.disappointments
10.A.really B.totally C.actually D.truly
11.A.Besides B.Meanwhile C.Moreover D.Instead
12.A.allow B.encourage C.approve D.share
13.A.so B.the one C.such D.as
14.A.enjoy B.better C.maintain D.stand
15.A.paid B.asked C.cared D.sought
16.A.gives out B.comes out C.brings out D.stands out
17.A.exhausted B.energetic C.realistic D.effective
18.A.honor B.pressure C.happiness D.burden
19.A.anyone B.who C.one D.whoever
20.A.enters B.fits C.falls D.matches
高三英语完型填空困难题查看答案及解析
These days my work is mostly on the Internet. However, there is one ______ that I use nearly every day. And I learned it from my dad almost 40 years ago in a very different ______.
My father ran a plumbing(水管) shop. I had to ______ him with his work. One day, I was asked to work ______ a concrete floor. It wasn’t the kind of work I ______. The work was physical work which involved ______ a chisel(凿子) and swinging a five- pound hammer at it really ______. Often, my aim was bad ______ the hammer missed the chisel and ______ my wrist. After ten minutes, my dad came, expecting to find the job completed. Actually, it wasn’t. He asked, “Son, have you been doing it all the time?”“Well dad,” I told him ______, “I figure out a good way to do this more ______. I just tap the chisel and move it. I’m generating a circle of shock wave down into the concrete. That way, it’ll break along the lines and I won’t hurt my wrist again.” Dad gave me a ______ look. He said, “Son, just hit the thing.” Then Dad ______ me his hand. I saw many scars on it .He told me, “If you stick to the work, you’ll ______ it sooner. “ Well, I did hit it then. And the job only took five more minutes to finish. ______ enough, even though I hammered my ______ two or three times, I was proud that I’d just done it.
Today, nearly 40 years later, when I ______ any difficulty in work I still hear my father’s voice, “Son just hit the thing.”I feel ______ because I know he’s still urging me to take action, go ahead, get the job done, and never ______ the scars. And that’s not a bad ______ to carry through life.
1.A. reason B. principle C. measure D. plan
2.A. life B. moment C. job D. occasion
3.A. help B. leave C. bother D. provide
4.A. sweeping B. building C. designing D. breaking
5.A. enjoyed B. heard C. found D. avoided
6.A. finding B. making C. holding D. choosing
7.A. frequently B. fast C. exactly D. hard
8.A. so B. but C. or D. when
9.A. missed B. destroyed C. hit D. pressed
10.A. sadly B. proudly C. rapidly D. loudly
11.A. safely B. quickly C. normally D. funnily
12.A. satisfied B. tired C. funny D. serious
13.A. gave B. lent C. posted D. showed
14.A. repeat B. improve C. finish D. know
15.A. Lucky B. Strange C. Peaceful D. Happy
16.A. face B. foot C. leg D. hand
17.A. get on B. make up C. meet with D. find out
18.A. hesitant B. worried C. comfortable D. encouraged
19.A. check B. mind C. develop D. put
20.A. lesson B. arrangement C. attitude D. situation
高三英语完形填空中等难度题查看答案及解析
There he was, turning the corner of Hawley and Main Street like clockwork. His red hair seemed to catch the sunlight, giving his head a soft candle-flame glow. He caught my eye, and up went his arm in his usual wave. As usual, I _______back and gave him a warm smile. I didn’t know his name, but he was very _______to everybody. No matter the weather, I saw him walking out there almost every day.
Having moved from a larger city, I wasn’t used to waves from _______. Actually, wherever we were, people hardly_______each other. We simply passed by each other, heads down, minding our own_______.
Perhaps that’s why I enjoyed these daily waves. It felt great to be _______and receive that message of “Hello!”. On days when we didn’t _______ to pass each other, I missed him and wondered if he was all right. The next day, I’d find myself driving with one eye on the _______. It was a happy reunion when I spotted him, and I’d wave first in my _________.
One night I was walking in the street, my thoughts traveled to “The Waver”, wondering if I could be________enough to wave at people I didn’t know. Just at the point.
I heard a car ________. I made eye contact with the person in the car, smiled and waved at her. The woman’s face____________, and she waved back. I was a little surprised. I reminded myself, “It’s okay. It’s actually kind of ________!” I waved to everyone I saw the rest of the way home.
Everyone at some point in their lives wonders if they’ve made any ________on the world. I can tell you that you don’t have to change the world ________. It’s enough to help sweeten it a little, even simply by a heart-warming wave.
1.A.waved B.took C.saluted D.glanced
2.A.cautious B.reliable C.friendly D.thankful
3.A.strangers B.relatives C.colleagues D.employers
4.A.informed B.encouraged C.encountered D.acknowledged
5.A.behaviors B.business C.appearance D.manners
6.A.worried B.noticed C.relieved D.checked
7.A.agree B.attempt C.promise D.happen
8.A.pedestrians B.buildings C.street D.children
9.A.mildness B.kindness C.eagerness D.brightness
10.A.brave B.mature C.lucky D.crazy
11.A.attacking B.escaping C.following D.approaching
12.A.lengthened B.softened C.worsened D.tightened
13.A.cool B.tough C.fresh D.curious
14.A.comment B.impact C.decision D.sense
15.A.accurately B.slightly C.thoroughly D.generally
高三英语完形填空中等难度题查看答案及解析
The doctor told me to take the medicine_____.
A. every fourth hours B. each fourth hour
C. each four hours D. every four hours
高三英语单项填空中等难度题查看答案及解析
Recently a new science behind incentives(激励), 1._ (include) in education, has been discussed. For example, researcher Roland Fryer wanted to see what works best in motivating children 2._ __ (do) better in school. _3._ _ some cases, he gave students incentives based on input(输入), like reading certain books, while in _4._ _, the incentives 5._ (base) on output, like results on exams. His main 6._ _ (find) was that incentives increased achievement when based on input but had no effect when based on output. Fryer’s conclusion was that the incentives for inputs might be 7._ ____ (effect) because students do not know how to do better on an exam, apart from general rules like “study harder”. Reading certain books, on the other hand, is a well-set task over 8._ ___ they have much more control.
As long as you have direct control over your goal, you have 9._ __ much higher chance of success. And it’s easier to start again 10._ you fail, because you know exactly what you need to do.
高三英语语法填空中等难度题查看答案及解析
Recently a new science behind incentives(激励), 1.__ (include) in education, has been discussed.For example, researcher Roland Fryer wanted to see what works best in motivating children __2. (do) better in school._3. _ some cases, he gave students incentives based on input(输入), like reading certain books, while in _4.___, the incentives _ _5. (base) on output, like results on exams.His main 6.__ (find) was that incentives increased achievement when based on input but had no effect when based on output.Fryer’s conclusion was that the incentives for inputs might be 7.___ (effect) because students do not know how to do better on an exam, apart from general rules like “study harder”.Reading certain books, on the other hand, is a well-set task over 8.___ they have much more control.
As long as you have direct control over your goal, you have 9.__ much higher chance of success.And it’s easier to start again 10. you fail, because you know exactly what you need to do.
高三英语其他题中等难度题查看答案及解析
Mrs. Green, including her husband and three children, lived in a city, 1was very near the countryside. She worked2a teacher and gave music lessons at a school. Of course she was fond of 3
Mrs. Green had a good voice and she4her classes exciting. But she had a5point. Some of her notes(音调)were so high that they sounded like a door which needed6. In order to improve her notes, she took7chance(机会)that she could find to practise.
As her house was not big, she couldn't practise 8in it. So she usually left home, walking and singing9the country road. She practised her high notes10walking. However, each time she heard a person or a car 11along the road, she12singing. She did not want her high notes to be13, for she was shy.
One afternoon a fast open car came up to her so14and so fast that she didn't15it until the car was only a few meters. She was practising some of her16and most difficult notes at that time. As the car passed by, she saw a17expression come over the driver's face. He stopped suddenly to18all the tires(轮胎)carefully.
Mrs. Green felt it shy to tell the driver what the19he had heard really was. The driver found20wrong, got back into the car and drove off.
1.A. that B. which C. where D. there
2.A. as B. like C. with D. on
3.A. books B. pictures C. sports D. music
4.A. got B. supported C. made D. forced
5.A. weak B. strong C. good D. special
6.A. painting B. locking C. cleaning D. oiling
7.A. some B. each C. a D. other
8.A. operating B. listening C. singing D. other
9.A. across B. beside C. close to D. along
10.A. as soon as B. while C. after D. before
11.A. coming B. disappearing C. leaving D. driving
12.A. kept B. went on C. stopped D. began
13.A. found B. made C. hearing D. heard
14.A. quietly B. quickly C. carefully D. slowly
15.A. recognize B. catch C. realize D. provide
16.A. biggest B. highest C. nice D. largest
17.A. puzzled B. sad C. serious D. happy
18.A. watch B. examine C. control D. notice
19.A. fact B. note C. noise D. music
20.A. the tires B. everything C. something D. nothing
高三英语完形填空中等难度题查看答案及解析