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Physical fatigue is usually caused by ______.
A．transmittable diseases
B．too many stimulants
C．lack of physical exercise
D．excess wastes in the bloodstream
答案
更多“Physical fatigue is usually caused by ______.A．transmittable diseasesB．too many stimulants”相关的问题
第1题
Physical fatigue is usually caused by ______ 。
A．too many stimulants
B．excess wastes in the bloodstream
C．diseases
D．lack of exercise
第2题
Physical fatigue is usually caused by______.
A．transmittable diseases
B．too many stimulants
C．lack of physical exercise
D．excess wastes in the bloodstream
第3题
Physical fatigue is usually caused by ______.
A．too many stimulants
B．excess wastes in the bloodstream
C．diseases
D．lack of exercise
第4题
Besides, watching TV is entertaining.There are so many kinds of entertainment, such as sports activities, performance, plays and movies in the world.Of course, it is impossible for us to be on every spot, even with the best means of transportation of our time.However, TV can bring them right in front of us and with them our life is full of joys.
Above all, watching TV is educational.Education TV service offers teaching programs on all subjects for people of different professions as well as for students, children an aged people.No doubt, it provides the widest education and has the largest audience.Everyone of us, more or less, is benefited from watching TV.In a word, TV has great influence on people’s life, word and study.
(1).Why does the author say watching TV is a
good relaxation？
A.Because watching TV can ease our minds
B.Because watching TV can comfort our physical bodies
C.Because watching TV can keep us away from tension and fatigue
D.All of the above
(2).Which kind of entertainment do we need to be
on the spot？
A.Sport activities
B.Performances
C.Watching TV
D.Plays
(3).Which of the following is not the advantage
of watching TV？
A.Watching TV can keep us away from the tension and fatigue.
B.Watching TV is a good kind of entertainment
C.Watching TV is educational.
D.Watching TDV allows us be on every spot with the best means of transportation.
(4).Why is watching TV educational？
A.Because TV programs are very interesting
B.Because TV can provide teaching programs
C.Because watching TV is a good relaxation
D.Because watching TV is entertaining
(5).Which advantage is the most important
according to the passage？
A.Watching TV is a good relaxation
B.Watching TV is entertaining
C.Watching TV is interesting and instructive
D.Watching TV is educational
第5题
听力原文： Accidents are caused; they don't just happen. The reason may be easy to see: an overloaded tray, a shelf out of reach, a patch of ice on the road. But more often than not there is a chain of events leading up to the misfortune—frustration, tiredness, or just bad temper—that show what the accident really is, a sort of attack on oneself.
Road accidents, for example, happen frequently after a family quarrel, and we all know people who are accident-prone, so often at odds with themselves and the world that they seem to cause accidents for themselves and others.
By definition, an accident is something you cannot predict to avoid, and the idea which used to be current, that the majority of road accidents are caused by a minority of criminally careless drivers, is not supported by insurance statistics. These show that most accidents involve ordinary motorists in a moment of carelessness or thoughtlessness.
It is not always clear, either, what sort of conditions made people more likely to have an accident. For instance, the law requires all factories to take safety precautions and most companies have safety committees to make sure that the regulations are observed, but still, every day in Britain, some fifty thousand men and women are absent from work due to accidents. These accidents are largely the result of human error or misjudgment—noise and fatigue, boredom or worry are possible factors which contribute to this. Doctors who work in factories have found that those who drink too much, usually people, who have a high anxiety level, run three times the normal risk of accidents at work.
(33)
A．External conditions.
B．People's internal conditions influenced by physical or mental factors.
C．Slippery roads.
D．A chain of events.
第6题
When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also found to be affected, particularly before earth- quakes; snakes have been observed to come out of hibernation, rats to flee from their burrows, dogs howl and cats jump about unaccountably. This has led the US Geographical Survey to fund a network of volunteers to watch animals in an effort to foresee such disasters before they hit vulnerable areas such as California.
Conversely, when large numbers of negative ions are present, then people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with tumbling streams or waterfalls.
To increase the supply of negative ions indoors, some scientists recommend the use of ionisers; small portable machines that generate negative ions. They claim that ionisers not only clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive in research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment. After all, it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat.
What effect does excessive positive ionization have on some people？
A．They think they are mad.
B．They feel very tired.
C．They become violently sick.
D．They are too tired to do anything.
第7题
When a large number of positive ions are present in the air, many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also found to be affected, particularly before earthquakes; snakes have been observed to come out of hibernation, rats to flee from their burrows, dog howl and cats jump about unaccountably. This has led the U.S. Geographical Survey to fund a network of volunteers to watch animals in an effort to foresee such disasters before they hit vulnerable areas, such as California.
Conversely, when large numbers of negative ions are present, people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with tumbling streams or waterfalls.
To increase the supply of negative ions indoors, some scientists recommend the use of ionisers: small portable machines which generate negative ions. They claim that ionisers not only clean and refresh the air, but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive ion research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment. After all, it is debatable whether depending on seismic (地震的) readings to anticipate earthquakes is more effective than watching the cat.
According to the passage, static electricity can be caused by ______.
A．washing machines
B．wearing clothes made of natural materials
C．walking on artificial floor coverings
D．listening to the tape recorder
第8题
How does the author see pathological fatigue？
A．Some pathological fatigue is good for people.
B．Everyone is vulnerable to pathological fatigue.
C．Pathological fatigue needs no medical attention.
D．Pathological fatigue harms people psychologically only.
第9题
It can be inferred from the passage that ______ 。
A．every type of fatigue needs medical attention
B．pathological fatigue does not last long
C．jogging can be used as an escape from psychological problems
D．there is no cure for psychological fatigue
第10题
It can be inferred from the article that ______.
A．every type of fatigue needs medical attention
B．pathological fatigue does not last long
C．jogging can be used as an escape from psychological problems
D．there is no cure for psychological fatigue
