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  About 45 percent of Americans don’t get enough sleep, according to a recent survey.However, the benefits of getting enough sleep far outweigh the thrill of watching TV for one more hour or surfing the web.Getting a better night’s sleep will help you lose or keep your weight more effectively.Try these simple steps to improve your quality of sleep.

  Take time to relax

  So many of us go-go-go until it’s time for bed, but it’s important to take time to slow down and relax before sleeping.Do relaxing things, such as listening to soothing(抚慰的)music or deep breathing.Avoid stimulating(刺激的)activities such as writing e-mails, talking on the phone and watching TV.Some guidelines(指导方针):no e-mail after 8 p. m. and no TV or phone calls after 9 p. m..

  Darker is better

  Your body regulates your sleep cycle in response to the presence and absence of light, so dim the lights as evening approaches.Try getting ready for bed by candlelight.When you’re ready to sleep, make sure your room is as dark as possible.

  Put your thoughts to bed

  We all need time to process our day, but bed is not the place to do it if you want to sleep well.Take 10 to 15 minutes to record your thoughts in a journal.This effective technique will capture what’s in your mind so you don’t lie awake.Tell yourself you’re putting your thoughts to bed so that you can go to bed.

  No sugar or alcohol before bed

  These may wake you up.If you need a snack before bed, make it protein.

  Try to get more sleep

  Get an extra hour or two of sleep every night for a week and see how you feel.You’ll notice the difference!

(1)

The purpose of writing this text is to _________.

[  ]

A.

share some ways to slow down and relax before sleeping

B.

guide readers to improve their quality of sleep

C.

tell readers the importance of getting a good night’s sleep

D.

publish the results of a recent survey on quality of sleep

(2)

According to the text, we know that _________.

[  ]

A.

we should keep our bedrooms in strong light before going to bed

B.

writing a diary may excite us and influence our sleep

C.

we should never get up later on weekends than we do on weekdays

D.

candlelight is a good choice for our bedrooms when we’re getting ready to sleep

(3)

We should take time to slow down because it can _________.

[  ]

A.

inform us of the importance of sleeping

B.

signal to our body it’s time to sleep

C.

tell us to stop watching TV for making phone calls

D.

tell us not to do stimulating activities

答案:1.B;2.D;3.B;
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科目:高中英语 来源:宁夏银川一中2011-2012学年高二上学期期中考试英语试题 题型:050

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  When you donate blood, a small amount is usually taken in advance to test your blood type.If you are O+, the O is your ABO type and the+is your Rh type.It is possible to be A,B,AB, or O as well as Rh+or Rh-.

  The ABO system was discovered by Karl Landsteiner in the early 1900s.He was awarded the Nobel Prize for his achievements.There are four basic types of blood in the ABO system:A,B,AB and O.Everybody is born with one of these four types of blood.We get blood type, just like hair color and height from parents.Because of the substances(物质)contained in each type, the four groups must be transfused carefully.If two different blood types are mixed together, it may put a person into an extremely dangerous situation.Basically, A and B cannot be mixed.A and B cannot receive AB, but AB may receive A or B.In an emergency, type O blood can be given because it is most likely to be accepted by all blood types,so it is often called the universal donor.However,there is still a risk.For the opposite reason,AB is sometimes called the universal receiver.However,because there can be so many reactions in transfusions,patients usually receive only salt until their blood can be matched as exactly as possible in the blood bank of the hospital.

  There is a relationship between your blood type and your nationality.Among the Europeans, about 45 percent have type O while 42 percent have type A.The rarest is type AB.Other races have different percentage.For example, some American Indian groups have nearly 100 percent type out of 100 donors in the world.

(1)

Which of the following shown the correct relationships in blood transfusions?

[  ]

A.

B.

C.

D.

(2)

The underlined word “transfuse” most probably means ________.

[  ]

A.

to put the blood into a container

B.

to move the blood from one place to another

C.

to put the blood of one person into the body of another

D.

to give power to another person

(3)

The text mainly tells us ________.

[  ]

A.

about the basic types of human blood

B.

what kind of blood is the most common

C.

about Karl Landsteiner who won the Nobel Prize

D.

the relationship between blood type and nationality

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