职称英语 (12)
最新试题
The courageous boy has been the subject of massive media coverage.
05-09
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第一篇Heat and HealthExtremely hot weather is common in many parts of the world.Although hot weather just makes most people hot,it can cause medical problems and death.Health experts say that since the year 1900,extremely hot weather has killed more people in the United States than any other natural event.One year一the unusually hot summer of 1980一heat caused about 1,700 deaths in the United States.In 1995,more than 600 people died in a similar heat wave in one city一Chicago.To measure extreme heat,government weather experts have developed the Mean Heat Index.It measures the average of how hot it is felt all day on an extremely hot day.Experts say it is the total heat of a hot day or several hot days that can affect health.Several hot days are considered a heat wave.Experts say heat waves often become deadly when the nighttime temperature does not drop much from the highest daytime temperature.The most common medical problem caused by hot weather is heat stress.It is also least severe.For most people,the only result of heat stress is muscle pain.The pain is a warning that the body is becoming too hot. Doctors say drinking water will help the pain disappear after the body again has the right amounts of water and salt.For some people, however,the result is much more serious.For example,doctors say some people face a greatly increased danger from heat stress.These people have a weak or damaged heart,high blood pressure,or other problems of the blood system.Severe heat can help cause a heart attack or stroke.Health experts say this is the most common cause of death linked to hot weather.
05-09
It is obvious us that he will win the game.
05-09
We packed up the things we had accumulated（积累）over the last three years and left.
05-09
My father is a physician.
05-09
Below 600 feet ocean waters range from faintly lit to completely dark.
05-09
The mountains look giorious at sunrise.
05-09
There is always excitement at the Olympic Games when an athlete breaks a previous record oi performance.
05-09
Their parents once lived under very severe conditions.
05-09
Obviously these people can be relied on in a crisis.
05-09
热门试题
During his lifetime he was able to accumulate quite a fortune.
Radios are not permitted in the library.
I know people who find it practically impossible to give up smoking.
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Health Promotion1 World health will improve only if the people themselves become involved in planning, implementing,and having a say about their own health and health care.But involvement will not just happen.2 How serious are we about involving individuals,families,and communities?Are we prepared一mentally and professionally（专业上）一to listen to their concerns,to learn from them what they feel is important,to share with them appropriate information,to encourage and support them?In many cases,so far,the answer is"No".We can go on and on developing plans:nothing will happen unless all health workers,all health managers,and key professionals（专业人员）in other areas come to realize what is at stake. To overcome these particular stumbling一blocks（障碍物）,I see three major requirements.3 First,health workers must understand that the concept of primary health care involves new roles for them , and a new outlook（观点）.Not only should we be concerned with disease prevention and control,we must also be concerned with health promotion and care, and not least with development in general一and with people.Our health technologies must be based on what the people themselves want and need.4 Second,health workers must accept their new roles.More yet:they must be keen to try them out,to broaden their scope and to innovate（创新）in the partnership（合伙人、合作关系）approach. Their main concern must be to find ways of helping individuals and communities become self-dependent.5 This brings me to my third point:health workers must have the necessary skills to perform these new roles effectively and to make efficient use of existing knowledge.This calls for a training force fully familiar with previous experience and keen to provide the kind and quality of professional preparation needed.It also calls for full support from health manaqers for such traininq.
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Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach.
Chemical weapons are banned internationally.
There is always excitement at the Olympic Games when an athlete breaks a record.
You could condense all the worthwhile information in this book into a few pages.
I rarely play basketball.
Man cannot exist without water.
