题目内容
（请给出正确答案）
What can contribute to the unnecessary power consumption caused by computers？
A．screensavers B．phantom power
C．standby and sleep modes D．power-management tools
如果结果不匹配，请 联系老师 获取答案
更多“What can contribute to the unn…”相关的问题
What can contribute to drought？
[A] over-farming and soil erosion
[B] soil moisture
[C] water conservation
[D] natural disasters
In what way do top-level administrators from abroad contribute to university development？
A．They can enhance the university's image.
B．They will bring with them more international faculty.
C．They will view a lot of things from a new perspective.
D．They can set up new academic disciplines.
What is most probably the reason Securepoint employed Jaschan？
A．Because it wants to support him in the trial.
B．Because it sympathizes with him in the case.
C．Because he can contribute to the work on the defenses against computer viruses.
D．Because he is capable of attacking computer worms.
A.人们都应当为国家做出力所能及的奉献
B.每一个人应该尽他或她所能为他或她的祖国作奉献
M: Are you kidding？ I almost went broke over all the equipment I had to buy, and now I can't get funding.
Q: What does the man mean？
(18)
A．His equipment is broken.
B．He can't find his equipment.
C．He feels he is not being treated fairly.
D．He is satisfied with the funding.
根据以下内容回答题:Happiness can be described as a positive mood and a pleasant state of m
根据以下内容回答题:
Happiness can be described as a positive mood and a pleasant state of mind． According to recent polls sixty to seventy percent of Americans consider themselves to be moderately happy and one in twenty persons feels very unhappy．Psychologists have been study-ing the factors that contribute to happiness．It is not predictable nor is a person in an apparently ideal situation necessarily happy．The ideal situation may have little to do with his actual feel-ings． A good education and income are usually considered necessary for happiness．Though both may contribute，they are only chief factors if the person is seriously under-educated or actually suffering from lack of physical needs． The rich are not likely to be happier than the middle-income group or even those with very low incomes．People with college educations are somewhat happier than those who did not gra-duate from high school，and it is believed that this is mainly because they have more opportuni-ty to control their lives．Yet people with a high income and a college education may be less happy than those with the same income and no college education． Poor health does not rule out happiness except for the severely debilitated or those in pain．Learning to cope with a health problem can contribute to happiness．Those with a good sex lifeare happier in general，but those who have a loving affectionate relationship are happier than those who rely on sex alone．Love has a higher correlation with happiness than any other factor． It should be noted that people quickly get used to what they have，and they are happiest when they feel they are increasing their level no matter where it stands at a given time． Children whose parents were happily married have happier childhoods but are not nece—ssarily happier adults． The best formula for happiness is to be able to develop the ability to tolerate frustration，to have a personal involvement and commitment，and to develop self-confidence and self-esteem．
According to the article，happiness is greatly dependent upon（） ．
A.happy childhood
B.great wealth
C.a feeling that conditions are improving over what they were
D.a college degree
A.examines how news providers take advantage of headlines
B.studies what can lead to the concept of information overload
C.discusses solutions for people who feel overwhelmed
D.reviews different attitudes to the digital consumption
Happiness can be described as a positive mood and a pleasant state of mind. (69) According to recent polls (民 意测试) , sixty to seventy percent of Americans consider themselves to be moderately happy and one in twenty persons feels very unhappy. Psychologists have been studying the factors that contribute to happiness. It is not predictable nor is a person in an apparently ideal situation necessarily happy. The ideal situation may have little to do with his actual feelings.
A good education and income are usually considered necessary for happiness. Though both may contribute, they are only chief factors if the person is seriously undereducated or actually suffering from lack of physical needs.
The rich are not likely to be happier than the middle-income group or even those with very low incomes. (70) People with college educations are somewhat happier than those who did not graduate from high school, and it is believed that this is mainly because they have more opportunity to control their lives. Yet people with a high income and a college education may be less happy than those with the same income and no college education.
Poor health does not rule out happiness except for the severely disabled or those in pain. Learning to cope with a health problem can contribute to happiness. Those with a good sex life are happier in general, but those who have a loving, affectionate relationship are happier than those who rely on sex alone. Love has a higher correlation with happiness than any other factor.
It should be noted that people quickly get used to what they have, and they are happiest when they feel they are increasing their level no matter where it stands at a given time.
Children whose parents were happily married have happier childhoods yet they are not necessarily happier adults when they grow up.
The best formula for happiness is to be able to develop the ability to tolerate frustration, to have a personal involvement and commitment, and to develop self-confidence and self-esteem.
It can be inferred from the passage that______.
A．happiness is predictable
B．a person in an apparently ideal situation must be happy
C．happiness is not necessarily connected to one's situation in society
D．the rich are likely to be happier than the middle-income group
What did Ethbell do when she was 68？
A．She sat back and relaxed.
B．She decided to retire.
C．She entered university.
D．She worked out a new English program.
阅读材料，回答题。
Alpha Particle
From decaying radon （氡） atoms can destroy the living cells they strike and increase the likelihood that those cells will later become cancerous.Researchers have now directly demonstrated that neighboring cells not suffering direct hits can be harmed， too. They"ve also taken a step toward showing how this type of radiation，called alpha particles， indirectly hurts those bystanders.
Radon derives from the decay of uranium （铀） and seeps naturally into the air from the ground.lt"s the primary environmental source of alpha particles， which contribute to cancer risk by causing aberrations （失常）in DNA.Alpha particles from inhaled radon are second only to smoking as a cause of lung cancer.
Because a person"s exposure to alpha particles typically is low， researchers have had to estimate public health threats from radon by guess from the effects of higher doses of alpha radiation.Such data comes primarily from studies of survivors of the atomic bombs that destroyed Hiroshima and Nagasaki in Japan. The customary extrapolation （推测 ） assumes that cancer risk is proportional to the dose of radiation even at low doses.
Radiation"s effects in cell structure don"t necessarily reflect what happens in "a whole organism， with its full range of defense repair mechanisms， " says Duport.Processes such as DNA repair and cell death triggered by radiation damage could cancel the effect on by stander cells observed in the lab， he suggests.
Furthermore， while a bystander effect can contribute to cancer， other cell-to-cell interactions in living tissue "may relieve increased risk." says Barry Michael， a radiation biophysicist at the Gray Cancer Institute in Northwood， England.One of these interactions halts cell division and hence cancer. "The jury is still out on whether cell-to-cell effects lead to a greater or lower risk， " Michael says.
The passage‘s main topic is__________. 查看材料
A.The experiment done by researchers
B.Uranium is the key killer of neighboring cells
C.Cell-to-cell interaction can make up for the hurt cells
D.Bystander cells can be indirectly damaged by alpha particles
