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提问人:网友caigener666 发布时间:2022-01-07
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How much sleep does a person need?【31】the physiological bases of the need for sleep remain

conjectural (猜想), rendering conclusive answers to this question impossible, much evidence has been gathered on how much sleep people do in fact obtain. Perhaps the most important conclusion to be【32】from this evidence is【33】there is great variability among individuals in total sleep time. For adults,【34】between six and nine hours of sleep as a nightly average is not unusual, and 7.5 hours probably best expresses the norm. Such norms, of course, forms inevitably vary with the criteria of sleep employed. The most【35】and reliable figures on sleep time, including those cited here, come from studies in sleep laboratories, where EEG criteria are employed.

【36】consistently has been associated with the varying amount, quality, and pattern of electrophysiologically defined sleep. The newborn infant may spend an average of about 16 hours of each 24-hour period in sleep,【37】the sleep time drops sharply; by two years of age, it may【38】from nine to 12 hours. Decreases to approximately six hours have been observed among the elderly.

【39】will be discussed from below, EEG sleep studies have indicated that sleep can be considered to consist of several different stages. Developmental changes in the relative proportion of sleep time【40】in these sleep stages are as striking as age-related changes in total sleep time.

(31)

A.As

B.Despite

C.While

D.Whether

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更多“How much sleep does a person need?【31】the physiological bases of the need for sleep remain”相关的问题
第1题
【单选题】____is a kind of implement with the smooth base that can be heated to smooth clothes.

A、iron

B、dry-clean

C、stitch

D、stain

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第2题
【单选题】The monetary base is the sum of

A、Federal Reserve currency in circulation and Treasury currency in circulation.

B、vault cash, deposits at the Fed, and Federal Reserve currency in circulation.

C、the Fed’s monetary liabilities and the U.S. Treasury’s monetary liabilities.

D、none of the above.

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第3题
Just how much does the Constitution protect your digital data? The Supreme Court will now consider whether police can search the contents of a mobile phone without a warrant if the phone is on or around a person during an arrest.

California has asked the justices to refrain from a sweeping ruling particularly one that upsets the old assumption that authorities may search through the possessions of suspects at the time of their arrest. It is hard, the state argues, for judges to assess the implications of new and rapidly changing technologies. The court would be recklessly modest if it followed California’s advice. Enough of the implications are discernable, even obvious, so that the justices can and should provide updated guidelines to police, lawyers and defendants.

They should start by discarding California’s lame argument that exploring the contents of a smart phone — a vast storehouse of digital information — is similar to, say, rifling through a suspect’s purse. The court has ruled that police don’t violate the Fourth Amendment when they sift through the wallet or pocketbook of an arrestee without a warrant. But exploring one’s smart phone is more like entering his or her home. A smart phone may contain an arrestee’s reading history, financial history, medical history and comprehensive records of recent correspondence. The development of “cloud computing,” meanwhile, has made that exploration so much the easier.

Americans should take steps to protect their digital privacy. But keeping sensitive information on these devices is increasingly a requirement of normal life. Citizens still have a right to expect private documents to remain private and protected by the Constitution’s prohibition on unreasonable searches.

As so often is the case, stating that principle doesn’t ease the challenge of line-drawing. In many cases, it would not be overly onerous for authorities to obtain a warrant to search through phone contents. They could still invalidate Fourth Amendment protections when facing severe, urgent circumstances, and they could take reasonable measures to ensure that phone data are not erased or altered while a warrant is pending. The court, though, may want to allow room for police to cite situations where they are entitled to more freedom.

But the justices should not swallow California’s argument whole. New, disruptive technology sometimes demands novel applications of the Constitution’s protections. Orin Kerr, a law professor, compares the explosion and accessibility of digital information in the 21st century with the establishment of automobile use as a virtual necessity of life in the 20th: The justices had to specify novel rules for the new personal domain of the passenger car then; they must sort out how the Fourth Amendment applies to digital information now.

26. The Supreme Court will work out whether, during an arrest, it is legitimate to

A.prevent suspects from deleting their phone contents.

B.search for suspects’ mobile phones without a warrant.

C.check suspects’ phone contents without being authorized.

D.prohibit suspects from using their mobile phones.

The author’s attitude toward California’s argument is one ofA.disapproval

B.indifference

C.tolerance

D.cautiousness

The author believes that exploring one’s phone contents is comparable toA.principles are hard to be clearly expressed

B.the court is giving police less room for action

C.citizens’ privacy is not effectively protected

D.phones are used to store sensitive information

Orin Kerr’s comparison is quoted to indicate thatA.the Constitution should be implemented flexibly

B.new technology requires reinterpretation of the Constitution

C.California’s argument violates principles of the Constitution.

D.principles of the Constitution should never be altered

The author believes that exploring one’s phone contents is comparable toA.getting into one’s residence

B.handling one’s historical records

C.scanning one’s correspondences

D.going through one’s wallet

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第4题
Some home and office buildings in the U.S are now being heated with __________ energy.

A、lunar

B、solar

C、natural

D、water

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第5题

Regular child care provided outside home or by someone other than the mother does not in itself undermine healthy emotional connections between mothers and their 15-month-old infants, according to a long-term national study. The finding holds even if care begins during the first 3 months after birth and runs for 30 hours or more per week.

Among infants who receive unkind and unresponsive care from their mothers, however, the mother-child relationship may be damaged. "This research helps us put apart complexities regarding child care that have not previously been studied in detail," contends Jay Belsky, a psychologist.

The investigation consists of 1,153 children and their families living in or near Boston. The youngsters, no more than 1 month old when they entered the study in 1991, will be tracked until the age of 7. Experimenters administered questionnaires to mothers in their homes and videotaped baby caretakers interacting with the kids at ages 1, 6, and 15 months. Independent observers rated the quality of each child care efforts and noted infant nervousness. Unlike most previous studies, this one allows researchers to observe each caretaker's personality at child nursing, and kids' emotional reaction by the equipment.

From the first paragraph we know that ______.

A.mother care is the best according to a national study

B.child care outside home is the best in accordance with the study

C.regular child care outside home may play a role as a mother

D.connections between mothers and infants are damaged by outside care

2).According to the passage,unresponsive care from a mother may______.

A.ruin a kid's growth

B.injure a baby's emotional reaction

C.spoil a child's personality

D.harm the mother-child tie 

3).Jay Belsky implies that the study of child care______.

A.was interesting,but very difficult to make discovery

B.was never carried out in the past

C.was not much done in detail in the past

D.was greatly ignored by psychologists and researchers

4).The main difference between the investigation and the previous ones is that______.

A.the observers could rate the quality of child care efforts and analyzed them soon

B.video equipment enabled researchers to observe what was happening directly 

C.the researchers were able to give the questionnaires to mothers in their homes

D.the researchers started with only one month old infants

5).Which of the following is not TRUE of the investigation?

A.Some independent observers play a part.

B.Researchers paid site visits to see a caretaker's personality and kids' emotional reaction.

C.Cooperation from the mothers is also necessary.

D.It will last at least 7 years.

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