Research findings show we spend about two hours dreaming every night,no matter what we（ ）during the day.A.should have done B.would have done C.may have done D.must have done
题目
B.would have done
C.may have done
D.must have done
相似考题
参考答案和解析
更多“Research findings show we spend about two hours dreaming every night,no matter what we（ ）during the day.”相关问题
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第1题：
A
In China，more and more middle school students are getting shorter sleeping time than be-fore． Most students sleep less than nine hours every night，because they have much homework to do. Some homework is given by their teachers，and some by their parents． Also，some students don't know how to save time .They are not careful enough while they do their homework，so it takes them a Iot of time． Some students spend too much time watching TV or playing computer games．They stay up very late． Some students have to get up early every morning on weekdays to get to school on time by bus or by bike．lt can be a long way from home to school．
Schools and parents should cut down some of the homework so that our children can enjoy more than nine hours of sleep every night for their health． For children，we should make best use of our time． When we have enough time for sleeping，we will find it much better for both our study and health．
( )21． What makes most students sleep less than nine hours every night?
A． Watching TV．
B． Playing computer games．
C． Doing their homework．
D． Doing housework．
正确答案：C
21．C【解析】由第一段第二句可知由于做作业，大多数学生睡眠少于9小时。 -
第2题：
I (11) Lisa’s good friend． We (12) running stars． We (13) three meals to-gether every day． (14) breakfast， I like tw0 (15)and a glass of milk， and she (16) two hamburgers and two glasses of milk． For (17) ， she (18)a bowl of rice and some chicken ， and I (19) two bowls of rice， a plate of salad and some fish． For dinner， we have the same (同样的) (20) ．
( )11．
A．is
B．am
C．are
D．do
正确答案：B
11．B【解析】以l作主语，系动词用“am”。 -
第3题：
We have an English lesson ( ) every other day.A、on
B、for
C、by
D、/
参考答案：D
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第4题：
My house is ________ the two buildings, so we get little sunshine during the day.A.between
B.among
C.in
D.at
参考答案：A
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第5题：
B
The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning(旋转) of the earth. At the equator(赤道) day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 in the morning and sets at 6 in the evening. For six months the North Pole is tilted(倾斜) toward the sun. In those months the Northern Hemisphere(半球) gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than night. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.
56. When the Western Hemisphere is having day, the Eastern Hemisphere is having ______.
A.both day and night B.day C.neither day nor night D.night
正确答案：D
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第6题：
根据下面资料，回答题
I′ve often wondered how exactly sleep, or lack of it, can have such an awful effect on our bodies and, guess what, how much we sleep switches good genes on and bad genes off.
In the first half of 2013, the Sleep Research Centre at the University of Surrey found a direct link between hours spent sleeping and genes. Every cell in our bodies carries genetic instructions in our DNA that act as a kind of operating handbook. However, each cell only "reads" the part of this handbook it needs at any given moment.
Can sleep affect how a gene reads instructions It′s a question asked by Professor Derk-Jan Dijk at the University of Surrey. He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours.
Blood samples were taken each week to compare which genes in blood cells were being used during the long and short nights. The results were rather surprising. Several hundred genes changed in the amount they were being used, including some that are linked to heart disease, cancer, and Type 2 diabetes. Genes to do with cell repair and replacement were used much less.
Sleep restriction (six and a half to seven hours a night) changed 380 genes. Of these,220 genes were down regulated (their power was reduced), while 160 were up regulated (their power was increased). Those affected included body-clock genes which are linked to diabetes. One of the most downgraded genes is that which has a role in controlling insulin and is linked to diabetes and insomnia. The most upgraded gene is linked to heart disease.
So changing sleep by tiny amounts can upgrade or downgrade genes that can influence our health and the diseases we suffer from when we sleep too little.
The important message is that getting close to eight hours of sleep a night can make a dramatic difference to our health in just a few days through the way it looks after our genes.
Which of the following can be inferred from the findings of the sleep research 查看材料A.When there is a sleep restriction, genes to do with cell repair and replacement function less.
B.In a sleep, several hundred genes change in the amount. The more changes, the worse results.
C.When genes are up regulated, they do good to health; when genes arc down regulated, they do harm to health.
D.Eight hours of sleep a day can be beneficial to our health in that it looks after our genes.答案：D解析：推断题。根据文章最后一段“The important message is that getting close to eight hours of sleep a night Can make a dramatic difference to our health in just a few days through the way it looks after our genes．”可知，8个小时的睡眠模式对人体是非常有益的，因为这样的睡眠时间能很好地照料我们的基因，D项是此段话的同义表达，故选D。A项属于原文的直接信息，不用推断。B项说法错误，改变越多，并不一定意味着结果越差，要看这种改变是导致基因活性降低还是上升。文章第五段中提到，在下调程度最高的基因中，有一种负责控制胰岛素合成的基因与糖尿病和失眠密切相关，而上调程度最高的基因则与心脏病有关联，可见基因下调和上调均可能对健康有害，故C项说法错误。 -
第7题：
根据下面资料，回答题
I′ve often wondered how exactly sleep, or lack of it, can have such an awful effect on our bodies and, guess what, how much we sleep switches good genes on and bad genes off.
In the first half of 2013, the Sleep Research Centre at the University of Surrey found a direct link between hours spent sleeping and genes. Every cell in our bodies carries genetic instructions in our DNA that act as a kind of operating handbook. However, each cell only "reads" the part of this handbook it needs at any given moment.
Can sleep affect how a gene reads instructions It′s a question asked by Professor Derk-Jan Dijk at the University of Surrey. He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours.
Blood samples were taken each week to compare which genes in blood cells were being used during the long and short nights. The results were rather surprising. Several hundred genes changed in the amount they were being used, including some that are linked to heart disease, cancer, and Type 2 diabetes. Genes to do with cell repair and replacement were used much less.
Sleep restriction (six and a half to seven hours a night) changed 380 genes. Of these,220 genes were down regulated (their power was reduced), while 160 were up regulated (their power was increased). Those affected included body-clock genes which are linked to diabetes. One of the most downgraded genes is that which has a role in controlling insulin and is linked to diabetes and insomnia. The most upgraded gene is linked to heart disease.
So changing sleep by tiny amounts can upgrade or downgrade genes that can influence our health and the diseases we suffer from when we sleep too little.
The important message is that getting close to eight hours of sleep a night can make a dramatic difference to our health in just a few days through the way it looks after our genes.
What can we learn about Professor Derk-Jan Dijk′ s experiment 查看材料A.The experiment was carried out to find the answer to how genes affect sleep.
B.The experiment took a period of more than two weeks to reach a conclusion.
C.His volunteers were divided into two groups with two different sleeping patterns.
D.Blood samples of the volunteers were checked afterwards to decide how many genes changed in sleeping.答案：B解析：推断题。定位于第三段和第四段。根据第三段的第一句话“Can sleep affect how a gene reads instructions ”可知Derk-Jan Dijk教授的实验是为了发现睡眠对人体基因变化的影响．而不是基因影响睡眠，故A项不正确。根据第三段的最后一句话“He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours．”可知，他并没有将志愿者进行分组，而是要求他们第一周每晚睡七个半到八个小时，第二周将睡眠时间调整为六个半到七个小时，故C项不正确。再结合第四段的前两句话，他将志愿者这两周的血液样本进行比对，观察基因运作情况的不同．实验结果令人大吃一惊。由此可推断出，这个实验进行了两周多才得出结论，故B项正确，D项不正确，采集血液样品是为了比较在不同睡眠时长下所用到的基因的不同，而不是多少基因被改变。 -
第8题：
You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. At present about 90 GB of data is stored in DB1. You made some rough calculations that every day about 1 GB of data is modified or inserted. You set the recovery model of DB1 to Simple. According to the company requirements, during business hours, data loss of more than 120 minutes worth of transactions is unacceptable. You have to choose a backup strategy which must comply with the following two requirements: Using as little disk space as possible Complying with the company requirements. So what action should you perform to achieve this goal?（）
- A、A full database backup should be performed once daily. During business hour, a transaction log backup should be performed every two hours.
- B、A full database backup should be performed once daily
- C、A full database backup should be performed once daily. During business hours, a differential backup should be performed every two hours
- D、Perform a full database backup should be performed once every week. A differential backup should be performed once daily. During business hours a transaction log backup should be performed every two hours.
正确答案:C -
第9题：
问答题We walked for many hours through the thick forests and over the rocky hills until we had reached the clearing A Bin which we would pitch our tent for the night. No error C D E正确答案： B解析：
本句完成时的用法不正确。因为到达空地发生在步行这个行为之后，应使用一般过去时reached。 -
第10题：
单选题In this experiment, they are wakened several times during the night, and asked to report what they _____.Ahad just been dreaming
Bhad just dreamt
Care just dreaming
Dhave just been dreaming
正确答案： C解析：
句意：在这个试验中，他们一晚上被叫醒好几次，并被要求描述出自己刚刚在做的梦。句子前后时态应一致或相呼应，句子前半部分用的是一般现在时，排除选项A与B。句中“他们”被要求描述自己醒来前正在做的梦，故排除选项C。 -
第11题：
填空题____（complete） the project as planned, we have to work two more hours a day.正确答案： To complete解析：
句意：为了按计划完成这个项目，我们每天不得不多工作两个小时。本题考查动词不定式。通过句中的“planned”可知，该项目还没有完成，只是计划过，表示“将要完成”用动词不定式表达。故划线处填To complete。 -
第12题：
问答题But Americans don't seem to be getting the message that we need seven to nine hours per night.正确答案：解析： -
第13题：
我们每天应该读至少半小时的英语。
We should read English for________ ________ ，half an hour every day．
正确答案：
35. at least -
第14题：
Last night we went to a big party.The dinner and speeches _____ more than three hours.A.took
B.spent
C.used
D.occupied
答案：D -
第15题：
We _____ rather talk about football or the weather or what we had for lunch.
A: will
B: should
C: would
D: could
参考答案：C
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第16题：
We’ve got two weeks off work __________ Christmas Day.A.include
B.includes
C.included
D.including
答案：D
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第17题：
We can infer that the students are required to ______in their whole driving practice.
A. go out driving for twelve times
B. spend at least six hours driving
C. drive for two hour blocks of time
D. get half an hour driving
正确答案：A53．答案为A 从短文第二段，学生总共要练6小时，每次练车半小时的细节推断学生需出车 12次。
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第18题：
根据下面资料，回答题
I′ve often wondered how exactly sleep, or lack of it, can have such an awful effect on our bodies and, guess what, how much we sleep switches good genes on and bad genes off.
In the first half of 2013, the Sleep Research Centre at the University of Surrey found a direct link between hours spent sleeping and genes. Every cell in our bodies carries genetic instructions in our DNA that act as a kind of operating handbook. However, each cell only "reads" the part of this handbook it needs at any given moment.
Can sleep affect how a gene reads instructions It′s a question asked by Professor Derk-Jan Dijk at the University of Surrey. He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours.
Blood samples were taken each week to compare which genes in blood cells were being used during the long and short nights. The results were rather surprising. Several hundred genes changed in the amount they were being used, including some that are linked to heart disease, cancer, and Type 2 diabetes. Genes to do with cell repair and replacement were used much less.
Sleep restriction (six and a half to seven hours a night) changed 380 genes. Of these,220 genes were down regulated (their power was reduced), while 160 were up regulated (their power was increased). Those affected included body-clock genes which are linked to diabetes. One of the most downgraded genes is that which has a role in controlling insulin and is linked to diabetes and insomnia. The most upgraded gene is linked to heart disease.
So changing sleep by tiny amounts can upgrade or downgrade genes that can influence our health and the diseases we suffer from when we sleep too little.
The important message is that getting close to eight hours of sleep a night can make a dramatic difference to our health in just a few days through the way it looks after our genes.
What kind of relation is directly discussed in the passage 查看材料A.Sleeping hours and changes of genes.
B.Sleeping hours and diseases.
C.Changes of genes and diseases.
D.Genes and health.答案：A解析：主旨题。阅读第一段、最后一段和每段第一句话，不难看出本文主要讲的是睡眠时间与人体内基因的关系。第二段中的“a direct link between hours spent sleeping and genes”更是直接地进行了表述。故选A。 -
第19题：
Power Napping is Good f the I.Q.
Today we hear me me about the imptance of getting enoughsleep—about eight hours a night. Sleep can help heal give energy toboth the body the brain. ____1____ It seems almost certain that the thirdof our lives that we spend asleep has a great effect on the two-thirds that weare awake. Sleep affects our emotions, memy, focus, behavi.
Studies show that people in developed countries spend less timeasleep me time at wk commuting. Dr. Karine Spiegel, at theUniversity of Chicago, has found that the average length of sleep has gone downfrom nine hours a night in 1910 to seven--a-half hours a night today.However, our bodies cannot function well without enough sleep. ____2____Accding to Canadian scientist Dr. Stanley Cen, every hour of lost sleep at nightcauses us to lose one I.Q. point the next day. F example, when someone getsonly five six hours of sleep each night f a week, the person’s I.Q. couldgo down 15 points me. ____3____
Most sleep experts say that humans need at least eight hours ofsleep every day, but it should be in two stages: a long sleep at night ashter nap in the afternoon. Some companies help their employees follow thisadvice. ____4____ They say this makes the wkers much me efficient.
To study sleep deprivation (not getting enough sleep), scientistsuse a test called the Multiple Sleep Latency Test (MSLT). During the test, aperson stays in a darkened, quiet room during the daytime. Scientists believethat a sleep-deprived person will fall asleep quickly. If it takes ten minutes longer to fall asleep, the person is probably getting enough sleep.
Scientists have also found that the time of year seems to affect howmuch sleep we need. ____5____ However, in the summer, people sometimes sleep aslittle as six hours, without having any problems.
词汇：
emotion n. 情绪
commuting n. 乘公交车上下班，通勤
I.Q. n. 智商(全称为intelligent quotient)
deprivation n. 剥夺，匮乏
Sleep Latency Test n. 睡眠潜伏期
注释：
1.have/has an effect on... 对……有效果的
2.go down from... to...从………降至……
练习：
A.They allow them to “power nap” in the afternoon, if only f 20 minutes.
B.Losing just one two hours of sleep a night, over a long period oftime, can cause serious health problems.
C.People usually sleep longer in the winter, sometimes as much as 14hours a night.
D.People in power are me intelligent because they take naps.
E.Medical experts now believe that sleep is even me imptant fhealth than diet exercise.
F.That’s why, without enough sleep, a nmally intelligent person may startto have difficulty doing daily tasks.答案：E解析：1.E 本题的做题线索为其之前的一句话，即“睡眠能有助于恢复补充身体和大脑的能量”，其描述的是睡眠的功能，选项E说的也是睡眠的功能，与前文形成补充说明。 -
第20题：
问答题A clock gains 10 seconds every hour. If we adjust it to the correct time, it is 5:30. And 24 hours later, what is the correct time now?正确答案： 5:2解析：
钟表每小时快10秒，24小时过后快240秒，即4分钟，所以正确的时间应为5:30往前调4分钟，即5:26。 -
第21题：
单选题In this experiment, they are wakened several times during the night, and asked to report what they ______ .Ahad just been dreaming
Bhad just dreamt
Care just dreaming
Dhave just been dreaming
正确答案： C解析：
在这个试验中，他们一晚上被叫醒好几次，并被要求描述出自己刚刚在做的梦。句子前后时态应一致或相呼应，句子前半部分用的是一般现在时，排除选项A与B。句中“他们”被要求描述自己醒来前正在做的梦，故排除选项C。 -
第22题：
单选题After reading the story what can we infer about the hospital?AIt is a children’s hospital.
BIt has strict rules about visiting hours.
CThe nurses and doctors there don’t work hard.
DA lot of patients come to this hospital every day.
正确答案： C解析：
根据最后一段I told her about the hospital rules, and she will not expect us until tomorrow，说明医院对探视病人的时间要求很严格。因此B选项正确。 -
第23题：
单选题Think of what a better world（）if we all had cookies and milk about 3 o’clock every afternoon.Awould it be
Bit would be
Cwill it be
Dit going to be
正确答案： C解析： 暂无解析