Ever feel like you’ve been hit on the head af...

Ever feel like you’ve been hit on the head after a bad night’s sleep? According to scientists, the thought isn’t as unbelievable as it seems.

A study found going without sleep for just one night causes changes in the brain similar to those that occur after a blow to the head. The researchers said the healthy young men examined in the study showed a sudden increase in the same chemicals which indicate brain damage. Professor Christian Benedict, of Uppsala University, Sweden, explained that the chemicals NSE and S-100B are biomarkers for brain damage, such as concussion(脑震荡). He said, "What we found was their levels in the blood rose in the group that went without sleep for a night. This was not to the extent that would happen after a head injury, for instance, but it was still significant. During sleep, the brain cleans poisonous substances off itself."

Benedict also said previous studies which linked a lack of sleep with increased risk of Alzheimer’s, Parkinson’s and multiple sclerosis could applaud his study. The rise of the chemicals in the blood after sleep loss may suggest not getting enough sleep contributes to a loss of brain tissue, he explained. Benedict, whose study is published in the journal Sleep, added, "In conclusion, the findings of our experiment indicate a good night’s sleep may be critical to maintaining brain health."

A third of the UK population suffer from sleep-related problems, while the average person now sleeps for only seven hours a night, compared with almost nine a few decades ago. Many scientists believe irregular sleeping patterns lead to illnesses ranging from aches and pains to heart disease, while less than eight hours’ sleep a night can lower the IQ the next day.

1.If you don’t sleep for a night, what will happen?

A.NSE and S-100B will increase.

B.The brain damage will be likea head injury.

C.You will suffer from concussion.

D.The brain will get rid of poisonous substances.

2.What do we know about previous studies?

A.They found reasons for brain disorders.

B.Their findings were published inSleep.

C.They were supported by Benedict’s study.

D.They focused on brain health.

3.What can we infer from the last paragraph?

A.UK people have the worst sleep.

B.Man’s intelligence is affected by sleep in a way.

C.People were smarter in the past.

D.A lack of sleep causes all brain-related problems.

4.What’s the main idea of the passage?

A.Eight hours’ sleep is important.

B.Regular sleeping patterns improve health.

C.Sleep loss is close to a blow to the head.

D.Human brains work during sleep.

高三英语阅读理解中等难度题查看答案及解析

Think positive

How are you feeling today? If your head 's in a spin because you 've had a bad night 's sleep, or maybe you've just got too much to do, the chances are you 're not in the best of moods. If everything seems like an effort and you have a negative attitude, the last thing you want to be told is to ‘be positive !　 1. .

Of course, developing a positive attitude is easier said than done. 2. When you're

feeling down, it is hard to be optimistic. But a study in the US has found that people who are optimists are more likely to live longer than those who have a more negative approach to life. So, maybe the thought of a longer life might encourage you to have a more hopeful outlook on life.

3. . Professor Lewina Lee from Boston University School of Medicine, who worked on the study, told the BBC that : “Our findings speak to the possibility that raising levels of optimism may promote longevity and healthy ageing. ” And she advises that pessimists could benefit from doing things like imagining a future where everything turns out well.

4. .Vicki Siska says “Music feeds my soul. A sense of humour keeps things in perspective.” And Pippa Kennedy says “ being grateful for what you have — and lots of chocolate —helps ! ” 5. . That's probably why other people have recommended doing yoga as well as staying fit and healthy to help maintain a positive outlook on life.

A. It doesn't come naturally to everyone.

B. As we know, every coin has two sides.

C. But being positive could have more benefits than you think.

D. Pessimists tend to give up when facing difficulties.

E. The saying goes that a healthy body leads a healthy mind.

F. People have been giving their personal advice on keeping a positive approach to life.

G. The study concluded that optimists may find it easier to control emotions and get less stressed.

高三英语七选五中等难度题查看答案及解析

After he became conscious, he remembered　　　　 and　　　　 on the head with a rod.

A.to attack;hit                                B.to be attacked;to be hit

C.attacking;be hit                                D.having been attacked;hit

高三英语单项填空中等难度题查看答案及解析

If you feel like you’ve been listening to the same three songs on a loop（循环地）, maybe it’s time to discover some new songs. With these apps (almost all of which are free, by the way) and some patience, you might just find your new favorite songs:

Indie shuffle

Allows you to browse through lesser-known artists’ music based on genre（类型）, release date and various other categories（类别）. You can save songs or artists you like and find bands with similar sounds.

Rormix

Rormix searches your music library to find out what genres and artists you already listen to. Based on its findings, the app suggests music videos you might like just as much. It’s an easy way to find new artists without getting too far away from the genres you know and love.

Band of the day

Provides you with new lesser-known artists and groups to listen to every single day! Download the app, turn on notifications, and you’ll get a daily recommendation.

Bandsintown

If you live for live music, Bandsintown will automatically download your library and suggest concerts you might like based on that list. If a new concert is announced in your area, you will get an automatic e-mail with the details. Basically, you will never miss another show. Here is the best part: You can buy tickets through the app.

Soundcloud

It is the place to find up-and-coming musicians and remixed singles. Anyone can share and ad music, leading to endless possibilities. The app is a streaming（流媒体）service, online community, and creative outlet. For fans, it makes it possible to keep up with your favorite artists’ latest releases.

1.What do Indie shuffle and Band of the day have in common?

A. They can both provide lesser-known artists.

B. They can both offer live music show.

C. Downloading music is free.

D. They are the most popular.

2.Which app could give you suggestions according to what genres and artists you already listen to?

A. Indie shuffle.　　 B. Rormix.

C. Band of the day.　　 D. Bandsintown.

3.What do we know about Bandsintown?

A. It provides you with new lesser-known artists and groups.

B. You can save songs or artists you like.

C. It is an online community.

D. It is the favorite of those who love live music.

4.Where does the text probably come from?

A. Science fiction.　　 B. A biography.

C. An advertisement.　　 D. A travel guide

高三英语阅读理解中等难度题查看答案及解析

Do you ever feel like you are studying a mad rush of one subject after another? When things happen at such a _______ pace, it is easy to lose sight of what you are learning. It is important to _______ every now and then to think about what you’ve been learning.

Self reflection means stopping the mad rush and _______ yourself so your brain can evaluate what it has already _______. Some people prefer to do their self reflections _______, while others keep a journal. Either method can work, depending on what your own personal _______ is.

School textbooks are often divided into units. This can make it _______ for someone to begin the process of self reflection. Watch for the times when you complete a unit of study. Sometimes you are reminded that the unit is _______ because there is some kind of test or quiz. Use these natural _______ as opportunities to stop and reflect.

You should find a ________ place—anywhere without noise is OK. This can even be sitting at your desk at school when you finish something ________ and the other students are still working. If you are going to take notes, take out your journal. Write down some notes on things that you ________ learned in this unit. Let your mind think about the notes you have written and make some ________.

Sometimes just pausing to think deeply allows your brain to make connections ________ new information can quickly appear when you ________ it again. Next, think about things that you still wonder about. ________ maybe you learned about a certain body system, but you don’t ________ how it works with the other body systems. Maybe you learned a new way to solve a math problem, but you’re not sure when to use it. Writing down your ________ will help you remember to continue seeking answers the next time you ________ the same topic.

Self reflection is an essential skill for a ________ student. If you have never taken the time to reflect, try it now.

1.A. steady　　 B. fast　　 C. relaxing　　 D. unique

2.A. change　　 B. check　　 C. stop　　 D. exercise

3.A. calming　　 B. enjoying　　 C. behaving　　 D. helping

4.A. dealt　　 B. forgotten　　 C. found　　 D. received

5.A. personally　　 B. mentally　　 C. slowly　　 D. directly

6.A. pace　　 B. grade　　 C. skill　　 D. style

7.A. quick　　 B. necessary　　 C. easy　　 D. hard

8.A. finished　　 B. divided　　 C. interrupted　　 D. covered

9.A. breaks　　 B. tests　　 C. units　　 D. periods

10.A. safe　　 B. familiar　　 C. quiet　　 D. comfortable

11.A. correctly　　 B. finally　　 C. early　　 D. independently

12.A. actively　　 B. newly　　 C. rapidly　　 D. carefully

13.A. choices　　 B. decisions　　 C. connections　　 D. improvements

14.A. in case　　 B. so that　　 C. even if　　 D. as though

15.A. seek　　 B. share　　 C. show　　 D. need

16.A. In general　　 B. Of course　　 C. For example　　 D. As usual

17.A. know　　 B. doubt　　 C. believe　　 D. remember

18.A. opinions　　 B. methods　　 C. worries　　 D. questions

19.A. come across　　 B. get through　　 C. think of　　 D. take away

20.A. talented　　 B. successful　　 C. serious　　 D. young

高三英语完形填空中等难度题查看答案及解析

Do you ever feel like you are studying a mad rush of one subject after another? When things happen at such a pace, it is easy to lose sight of what you are learning. It is important to every now and then to think about what you have been learning.

Self reflection(反思)means stopping the mad rush and 　 yourself so that your brain can　 evaluate what it has already 　 .Some people prefer to do their self reflections _ _, while　 others keep a journal. Either method can work, depending on what your own personal　　 is.

School textbooks are often divided into units. This can make it 　　 for someone to begin the process of self reflection. Watch for the times when you complete a unit of study. Sometimes you are reminded that the unit is _ 　 because there is some kind of test or quiz. Use these natural 　　 as opportunities to stop and reflect.

You should find a 　 　 place---anywhere without noise is OK. This can even be sitting at your desk at school when you finish something 　 and the other students are still working. If you are going to take notes, take out your journal Write down some notes on things that you learned in this unit. Let your mind think about the notes you have written and make some 　 .

Sometimes just pausing to think deeply allows your brain to make connections _　 new information can quickly appear when you 　 it again. Next, think about things that you still wonder about.　 , maybe you learned about a certain body system, but you don't 　 how it works with the other body systems. Maybe you learned a new way to solve a math problem, but you are not sure when to use it. Writing down your 　　　　 will help you remember to continue seeking answers the next time your　 　　 the same topic.

Self reflection is an essential skill for a　　 student. If you have never taken the time to reflect, try it now.

1.A. fast　　 B. steady 　　 C. relaxing　　　 D. unique

2.A. change　　 B. check　　 C. stop　　 　　　 D. exercise

3.A. calming　　 B. enjoying　　 C. behaving　　　 D.helping

4.A. dealt　　　 B. forgotten　 C. found　　 　　 　 D. received

5.A. personally　 B. mentally C. slowly　　 　　 D. directly

6.A. pace　　 　 B. grade　　　 C. style　　 　　 D. skill

7.A.quick　　 　 B. possible　　 C. suitable　　　 D. easy

8.A. finished　　 B. divided　　 C. interrupted　 D. covered

9.A. units　　　 B. tests　　 　 　 C. breaks　　　 　 D. periods

10.A. quiet　　 B. familiar　　 C. safe　　　 D. remote

11.A. early　　 B. correctly　 C. finally　　 D. independently

12.A. actively B. newly　　 C. rapidly　　 D. carefully

13.A. choices　 B. decision　　 C. connections　 D. improvements

14.A. so that　 B. in case　　　 C. even if　　 D. as though

15.A. seek　　　 B. share　　　 C. show　　 　　　 D. need

16.A. In genera 　　 B. Of course 　 C. For example　　　 D. As usual

17.A. know　　 　　 B. doubt　　 　 C.believe　　　 　　　 D. remember

18.A. opinions　　　 B. questions 　 C. worries　　　 　　 D. methods

19.A. come across　　 B. get through　 C. think of　　 　　 D. take away

20.A. talented　　　 B. young　　　 　 C. serious　　　 　　 D. successful

高三英语完形填空中等难度题查看答案及解析

– Have you ever been back to our Alma Mater(母校) after graduation?

-- Of course. _____.

Which of the following is incorrect?

A. She is 3 times larger than she was

B. She is as 3 times large as she was

C. She is 3 times what she was in size

D. She is 3 times her previous size

高三英语单项填空中等难度题查看答案及解析

Have you ever noticed how the way you feel about yourself sometimes depends on whether or not you get confirmation of your value from others?

I have______a lot about nurturing a positive identity of love and appreciation from the man who taught me to train dogs.

First, he started out by ______his dogs with love and respect, and by showing them an infinite amount of______as they were learning.

Then, the______thing he did was a true stroke of genius. He would cut a small piece of______for each dog. He would place it in the dog's sleeping area, for him to______each night. He would also take this carpet during the______and set it down in various locations, and sit the dog on the carpet, as he______the dog for being good.

Next, Frank would teach the dog to______the carpet himself, and carry it to_____ they were going. The dog would then set the carpet down when they______, with Frank all of the time praising him. Now Frank said, "The dog begins to feel that he truly______in every place he travels to, and no matter where he goes, he______my love and appreciation. "

If this strategy______so brilliantly with dogs, would it not work just______with human beings?

1.A.learned B.accumulated C.improved D.distinguished

2.A.pleasing B.treating C.surrounding D.chasing

3.A.sympathy B.comfort C.patience D.honor

4.A.first B.last C.next D.least

5.A.cloth B.meat C.area D.carpet

6.A.lie on B.hide in C.stand beside D.play with

7.A.morning B.afternoon C.evening D.day

8.A.blamed B.encouraged C.praised D.accompanied

9.A.carry with B.care for C.cut up D.pick up

10.A.wherever B.whenever C.however D.whatever

11.A.ran B.stopped C.stood D.turned

12.A.participated B.breaks C.belongs D.corresponds

13.A.receives B.expects C.ignores D.takes

14.A.works B.goes C.agrees D.applies

15.A.as possible B.as well C.better than D.still less

高三英语完形填空困难题查看答案及解析

—Do you feel like going to the cinema tonight?

—Sorry, I ' m so tired．I ____an early night．

高三英语单项填空中等难度题查看答案及解析

Have you ever noticed tiny raised areas on the branches of a tree? These may have been insects. These small insects feed on tree sap (汁液). Insects on urban trees are notably more abundant than those on rural trees. As a result, urban trees suffer from heavy infestations (害虫横行), and are often unhealthy or die. To protect and restore urban trees’ health, we need to determine the factors that make these tree pests more successful in urban habitats.

Living organisms interact closely with their environment. The warmer, more drought-stressed trees harbor more successful pests than cooler, less drought-stressed trees. As cities and natural habitats become hotter and drier, damaging insects will become more abundant on urban trees.

Trees within urban forests are valuable economically and for the environmental sustainability (可持续性) of the region. More than half of the world’s population lives in cities. Across the globe, people are moving into cities at a faster rate than ever. Rapid growth may turn cities into places with harder conditions. Although cities are primarily made of buildings, roads, parking lots, and vehicles, there are still plants in them. The trees within a city are referred to as the urban forest. Urban forests offer very big benefits to human and environmental health. They improve air and water quality, provide habitat for wildlife, cool down temperatures and beautify our environment. They make cities livable.

However, being a city tree is not easy. Heat released by human activities is trapped in cities. As a result, temperatures in urban areas are often warmer than their surrounding rural areas. We call this urban warming or the urban heat island effect. Urban habitats are mostly made of surfaces of asphalt (沥青) and concrete. These surfaces reduce the amount of rainwater that reaches tree roots. As a result, urban forests may suffer, which can negatively affect people and the environment.

What can we do to restore urban forests? Regular irrigation when possible may help keep pest populations under control. Planting tree species that are suitable to handle heat and drought stress would also reduce the occurrence of insect pest outbreaks.

1.What makes tree pests more successful in the city than in rural areas?

A.The warmer and rainy habitat.

B.The hotter and drier habitat.

C.The cooler and drier habitat.

D.The hotter and rainy habitat.

2.Urban forests make cities livable by　　　　　　 .

A.providing people enough clean water

B.improving the living environment

C.offering people economic benefits

D.lowering the temperatures

3.According to the text, what results in the city trees’ suffering?

A.Natural disasters.

B.Invisible forces.

C.Human activities.

D.Natural evolution.

4.What would be the best title for the text?

A.The Importance of the Urban Trees

B.How to Protect the Urban Trees

C.Urban Trees Are in Great Danger

D.Let’s Act for the Protection of Urban Trees

高三英语阅读理解中等难度题查看答案及解析