Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing, but it can give a false sense of security.
New research shows long-term sleep loss cannot be cured that easily. Scientists researched the effects of short- and long-term sleep loss and found that those who suffer long-term sleep loss may function normally soon after waking up, but experience steadily slower reaction times as the day goes by, even if they had tried to catch up the previous night.
The research has important safety significances in an increasingly busy society, not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night.
“We know that staying awake 24 hours without sleep will affect your performance to do all sorts of things, and this effect equals to drinking too much when driving,” said lead researcher Dr. Daniel Cohen of Boston’s Brigham and Women’s Hospital. But when those who suffer long-term sleep loss become all-nighters, “the harm is increased ten times,” Cohen said.
The National Institutes of Health says adults need seven hours to nine hours of sleep for good health. Regularly getting too little sleep increases the risk of health problems, including memory impairment and a weakened immune system. More immediately, too little sleep affects reaction times; sleepiness is to blame for car crashes and other accidents.
It has critically important complicated and unexpected results for anyone who works “crazy hours” and thinks they are performing fine with a few hours of weeknight sleep, said Harris, director at New York’s Montefiore Medical Center. “Don’t think you can just bank up your sleep on the weekend, because it doesn’t work that way,” he warned.
1.People with long-term sleep loss ______.
A. are quicker in thinking B. may feel refreshed soon after waking up
C. are surely energetic D. can have a strong sense of security
2.Which of the following is the immediate effect of long-term sleep loss?
A. Health problems B. Immune system
C. Reaction times D. Memory impairment
3.The underlined phrase “bank up” in the last paragraph most probably means ____.
A. pile up B. pick up C. add up D. build up
4.The text mainly advises people ______.
A. to sleep more time B. to sleep in on Saturday
C. to sleep scientifically D. to sleep little on weekend
高二英语阅读理解中等难度题
Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing, but it can give a false sense of security.
New research shows long-term sleep loss cannot be cured that easily. Scientists researched the effects of short- and long-term sleep loss and found that those who suffer long-term sleep loss may function normally soon after waking up, but experience steadily slower reaction times as the day goes by, even if they had tried to catch up the previous night.
The research has important safety significances in an increasingly busy society, not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night.
“We know that staying awake 24 hours without sleep will affect your performance to do all sorts of things, and this effect equals to drinking too much when driving,” said lead researcher Dr. Daniel Cohen of Boston’s Brigham and Women’s Hospital. But when those who suffer long-term sleep loss become all-nighters, “the harm is increased ten times,” Cohen said.
The National Institutes of Health says adults need seven hours to nine hours of sleep for good health. Regularly getting too little sleep increases the risk of health problems, including memory impairment and a weakened immune system. More immediately, too little sleep affects reaction times; sleepiness is to blame for car crashes and other accidents.
It has critically important complicated and unexpected results for anyone who works “crazy hours” and thinks they are performing fine with a few hours of weeknight sleep, said Harris, director at New York’s Montefiore Medical Center. “Don’t think you can just bank up your sleep on the weekend, because it doesn’t work that way,” he warned.
1.People with long-term sleep loss ______.
A. are quicker in thinking B. may feel refreshed soon after waking up
C. are surely energetic D. can have a strong sense of security
2.Which of the following is the immediate effect of long-term sleep loss?
A. Health problems B. Immune system
C. Reaction times D. Memory impairment
3.The underlined phrase “bank up” in the last paragraph most probably means ____.
A. pile up B. pick up C. add up D. build up
4.The text mainly advises people ______.
A. to sleep more time B. to sleep in on Saturday
C. to sleep scientifically D. to sleep little on weekend
高二英语阅读理解中等难度题查看答案及解析
Don’t look down upon the ugly little worm. In a few weeks , it ________into a beautiful big butterfly.
A.transforms B.would transform C.have transformed D.will transform.
高二英语单项填空中等难度题查看答案及解析
After a few courses on painting, Helen said she would ________ oil painting in her spare time.
A. speed up B. bring up C. take up D. sweep up
高二英语单项填空中等难度题查看答案及解析
After a few courses on painting, Helen said she would ________ oil painting in her spare time.
A.look up | B.bring up | C.take up | D.put up |
高二英语单项填空简单题查看答案及解析
A few weeks ago I was at the comer store, and there stood an old lady in front of me in line. She seemed very ______ when the cashier asked her to pay $ 38.00. She had about $ 5.00 in her wallet, and she began to ______. The cashier became very ______, telling her that she cannot buy these ______ because she didn’t have enough money. So, I told the cashier not to ______ it, and that I would ______ the difference. The cashier gave me a funny look,______ I really felt for this woman.
Anyway, I paid for my groceries and ______ the store. When I got outside, I saw the lady standing there. I asked her what was ______. She said that she could not remember where she lived, and she began to cry again. I said some names of the ______ around the area but she had no clue (线索). Just then, a car ______ and a woman jumped out of the car. It was this lady’s daughter. I ______ that her mother couldn’t find her way home. The daughter told me that she had Alzheimer’s disease (阿尔茨海默病) and that she had been ______ off a lot lately. Then the daughter ______ that her mother had 3 - bags of groceries and wondered ______ she got the money to pay for them. I was not ______ if I should tell her that I paid for them, but I did.
The daughter wanted to pay me back, but I ______. The daughter said “Thank you” and I said “Good bye”.
I felt so ______ and happy right through the day, because making others feel ______ makes me feel good. I know that if this ______ happened again, I would do the same thing.
1.A. excited B. puzzled C. disappointed D. convinced
2.A. cry B. bargain C. argue D. interrupt
3.A. unfair B. uncomfortable C. impatient D. impossible
4.A. diets B. programmes C. details D. items
5.A. ask for B. worry about C. charge D. order
6.A. make B. judge C. pay D. measure
7.A. so B. and C. therefore D. but
8.A. entered B. searched C. left D. closed
9.A. wrong B. matter C. happened D. problem
10.A. goods B. streets C. suggestions D. solutions
11.A. drove out B. pulled down C. drove off D. pulled up
12.A. responded B. explained C. described D. recommended
13.A. travelling B. racing C. wandering D. wondering
14.A. watched B. noticed C. collected D. returned
15.A. why B. where C. when D. whether
16.A. doubtful B. urgent C. jealous D. sure
17.A. refused B. appreciated C. denied D. ignored
18.A. anxious B. pleased C. interested D. relaxed
19.A. well B. content C. good D. proud
20.A. situation B. condition C. surrounding D. experience
高二英语完形填空中等难度题查看答案及解析
It was the beginning of the school year a few years ago and I had a little boy in my class who came from a nonEnglish speaking home. He was very quiet and shy. I wasn’t sure how much he understood during the school day and I was especially concerned that he just stood by himself at break time and did not play.If I tried to talk to him,he would turn away and tightly shut his eyes to hide from me.
After a day or two of this,I decided to seek the help from one of my outgoing and friendly little girls.I called her over and she ran to me,ready to help.
I immediately began a long speech about what I needed from her.I asked her if she would try to get him to play,and I started talking quickly about all these suggestions on how she could start communicating with him. I explained she could do this,she could do that,she could try this idea,she could try that idea.She touched my arm to stop my talking and looked up at me in that wise and special way that only a sixyearold can,and said,“Don’t worry.I speak kid.” And she ran off.
I stood there all alone,silently watching her.It took less than a minute for the two new friends to run off,hand in hand,happily joining a game of tag (捉人游戏) taking place all over the gym.
I often think of that small moment,about what I learned and how important it is for all teachers to speak kid—big kid,little kid and middle kid.I know my focus must be on teaching students how to think,how to approach problems,and how to figure out solutions and teaching them never to let the_opportunity away.We must be ready to learn from our students because those “teachable moments” during the school days are for us,the teachers,as well as our kids.
1.Why did the author worry about the boy?
A.He didn’t dare to look at the author in the eyes.
B.He couldn’t speak English as well as other students.
C.He failed to understand what the author taught.
D.He was unwilling to communicate with others.
2.By saying “I speak kid”,the girl meant that she could________.
A.speak the language that kids understand
B.speak the boy’s native language
C.know what kids want to say
D.speak well like a little kid
3.The underlined words “the opportunity” refer to the chance to________.
A.play at break time B.learn from students
C.solve problems D.speak kid
4.What can we learn from the passage?
A.Gold will shine everywhere.
B.Children are more friendly than adults.
C.Teachers’ thoughts are different from students’.
D.You learn something every day if you pay attention.
高二英语阅读理解中等难度题查看答案及解析
Every one of us in the hospital hoped that he________ after a few days’ treatment.
A. picked up B. made up C. took up D. looked up
高二英语单项填空中等难度题查看答案及解析
Mrs. Obama spoke to the graduates of Martin Luther King Jr. High School on Saturday in her only high school commencement (毕业典礼) speech this year. The ceremony took place in the gymnasium of Tennessee State University.
The first lady told the 170 graduates that she spent too much of her time in college focusing on academic achievements. While her success in college and law school led to a highprofile job, she said, she ended up leaving to focus on public service. “My message to you today is that don't waste a minute living someone else's dream,” she said. “It takes lots of real work to discover what brings you joy and you won't find what you love simply by checking mailboxes or surfing the Internet.”
She said MLK reminded her of her own high school experience in Chicago.“My No.1 goal was to go to a high school that would push me and challenge me,” she said. “I wanted to go somewhere that would celebrate achievements.” “Unfortunately, schools like this don't exist for every kid,” she said. “You are blessed.”
The first lady told the graduates that failure may be a part of their college careers, and that how they respond to difficulties determines what they will become. “That's when you find out what you're really made of in those hard times,” she said. “But you can only do that if you're willing to put yourself in a position where you might fail. Overcoming difficulties has been a mark of many great people,” she said. “Oprah Winfrey was demoted(降职) from her first job as a news reporter, and now she doesn't even need a last name,” she said of media giant Oprah Winfrey. “And then there's this guy Barack Obama. I could take up a whole afternoon talking about his failures. He lost his first race for Congress,” the first lady joked, “and now he gets to call himself my husband.”
1.When choosing her high school, Mrs Obama .
A. wanted to study law
B. was pushed to make a choice
C. failed to find an ideal school
D. was willing to meet challenges
2.By mentioning Oprah's example, Mrs Obama wanted to tell the graduates .
A. to be brave enough to risk failing
B. to work hard to get promoted
C. to start as a news reporter
D. not to waste time doing what they dislike
3.Where can you probably find this text?
A. In a news report.
B. In a politics book.
C. In a graduation paper.
D. On Mrs Obama's blog.
4.What do we know about Mrs Obama from the text?
A. She is a graduate of Tennessee State University.
B. This is the first time she has given a speech to graduates.
C. She complained about her school life in her speech.
D. She is enthusiastic about public service.
高二英语阅读理解中等难度题查看答案及解析
R.U.Darby and his uncle were digging for gold in the West. After weeks of labor, he was rewarded when he discovered shining ore(矿石). He needed machinery to bring the ore to the surface. So he borrowed money from his relatives and neighbors and went back to work on the mine.
The first car of ore was mined and sent to a smelter. The gold that they got in return proved they had one of the richest mines in Colorado! A few more cars of that ore would clear the debts. Then would come the big profits.
Down went the drills! Up went the hopes of Darby and Uncle! Then something happened! The vein of gold ore disappeared! The pot of gold was no longer there! They drilled on, desperately trying to pick up the vein again, but they found nothing.
Finally, they decided to quit. They sold the machinery to a man for a few hundred dollars, and took the train back home. That man asked a mining engineer to look at the mine and do a little calculating. The engineer said that the project had failed because the owners were not familiar with “fault lines(裂纹线)”. His calculations showed that the vein would be found just three feet from where it was found.
The man took millions of dollars in ore from the mine, because he knew enough to ask for expert advice before giving up.
R.U. Darby was struggling for years to pay back the money from his relatives and neighbors. He went into the business of selling life insurance.
Remembering that he lost a huge fortune because he stopped three feet from gold, Darby profited from the experience in his chosen work, by the simple method of saying to himself , “I stopped three feet from gold, but I will never stop because men say 'no' when I ask them to buy insurance.”
Darby is part of a small group of fewer than 50 men who sell more than a million dollars in life insurance every year. His “stick-ability” comes from the lesson he learned from his “quit-ability” in the gold mining business.
1.Darby and his uncle stopped digging for gold because___
A. They didn’t have the machinery to dig for the ore
B. They didn’t have enough money to manage the mine
C. They had already had enough gold and made big profits
D. They had tried to find the vein of gold again, but it was in vain.
2.What was a good quality of the man who worked on the mine after Darby and his uncle?
A. He knew the machinery better than the Darbys.
B. He knew the importance of seeking expert advice.
C. He had very strong stick-ability and never gave up.
D. He was good at calculations and familiar with fault lines.
3.What happened to Darby in the end?
A. He became a very successful businessman.
B. He worked as an ordinary salesman selling life insurance.
C. He struggled for the rest of his life to pay back the money he had borrowed.
D. He lived an easy life with all the money he had earned from the gold.
4.What is the main message that the author intends to convey with the story?
A. One is never too late to start a new career.
B. Don’t hesitate to ask for help when you are in need.
C. Never give up and you will succeed eventually.
D. It is important to have knowledge about everything.
高二英语阅读理解中等难度题查看答案及解析
It was only a few weeks after my surgery. I went to Dr. Belt’s office for a 36. It was just after my first chemotherapy treatment(化疗). My scar was still very tender.(疼痛的) 37. I was taken to an examination room to have my blood 38, again—a terrifying process for me, since I’m so frightened of 39.
I lay down on the 40. Then Ramona entered the room. Her 41 smile was familiar, and 42 in contrast to my fears. I’d first seen her in the office a few weeks earlier. She wasn’t my 43 on that day, but I remember her because she was laughing. What could she 44 find to laugh about at a time like this? So I decided she wasn’t 45 enough about the whole thing.
But this day was 46. Ramona had taken my blood before. She 47 my fear of needles, and she kindly 48 the medical equipment under a magazine. As we opened the layers of bandage, the 49 scar on my chest could be seen.
She gently 50 over and ran her hand across the scar, 51 the smoothness of the healing skin. I began to cry gently and quietly. She brought her warm eyes to mine and said, “You haven’t 52 it yet, have you?” And I said, “No.”
I continued to cry gently. In 53 tones she said. “This is part of your body. This is you. It’s okay to touch it.” But I couldn’t. So she touched it for me. The 54. The healing wound. And beneath it, she touched my heart.
That night as I lay down, I gently placed my hand on my chest and I left it there 55 I fell asleep. I knew I wasn’t alone.
1. A.prescription B.checkup C.conversation D.discussion
2. A.At once B.As usual C.In fact D.In addition
3. A.corrected B.mixed C.drawn D.cleaned
4. A.doctors B.nurses C.blood D.needles
5. A.operation table B.office floor C.examining bed D.test bed
6. A.weak B.bitter C.shy D.warm
7. A.worked out B.stood out C.found out D.gave out
8. A.girl B.partner C.companion D.nurse
9. A.accidentally B.particularly C.possibly D.actually
10. A.serious B.curious C.worried D.nervous
11. A.different B.difficult C.pleasant D.common
12. A.talked about B.got around C.knew about D.put away
13. A.found B.replaced C.showed D.hid
14. A.old B.worn C.fresh D.fine
15. A.came B.went C.searched D.reached
16. A.examining B.covering C.pressing D.removing
17. A.watched B.discovered C.touched D.unfolded
18. A.tough B.soft C.cold D.strict
19. A.bandage B.soul C.pain D.scar
20. A.after B.until C.since D.when
高二英语完型填空中等难度题查看答案及解析