最新试题
The courageous boy has been the subject of massive media coverage.
05-09
共用题干 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
Many kinds of animals have vanished from the earth. He looked uneasy and refused to answer questions. Fearing further attacks,most of the population had given up the city. The city has decided to get rid of all the old buildings in its center. Since the Great Depression,the United States government has protected farmers from damaging crops in grain pnces. 共用题干 第三篇In the early days of the United States,postal charges were paid by the recipient and charges varied with the distance carried.In 1825,the United States Congress permitted local postmasters to give letters to mail carriers for home delivery,but these carriers received no government salary and their entire compensation depended on what they were paid by the recipients of individual letters.In 1847,the United States Post Office Department adopted the idea of a postage stamp,which of course simplified the payment for postal service but caused grumbling by those who did not like to prepay.Besides,the stamp covered only delivery to the post office and did not include carrying it to a private address.In Philadelphia,for example,with a population of 150,000,people still had to go to the post office to get their mail.The confusion and congestion of individual citizens looking for their letters was itself enough to discourage use of the mail.It is no wonder that,during the years of these cumbersome arrangements,private letter-carrying and express businesses developed.Although their activities were only semi-legal,they thrived and actually advertised that between Boston and Philadelphia they were half-day speedier than the government mail.The government postal service lost volume to private competition and was not able to handle efficiently even the business it had. Finally,in 1863,Congress provided that the mail carriers who delivered the mail from the post offices to private addresses should receive a government salary,and that there should be no extra charge for that delivery.But this delivery service was at first confined to cities,and free home delivery became a sign of urbanization.In 1890,of the 75 million people in the United States,fewer than 20 million had mail delivered free to their doors.The rest,nearly three quarters of the population,still received no mail unless they went to their post office. 共用题干 "Much of the sickness and death attributed_________(51)the major communicable diseases is in fact caused by malnutrition which makes the body less able to withstand infections when they strike",said Dr. Hiroshi Nakajima,Director-General of WHO,in his statement on the first day of the World Food Summit. "At the same time,"he added,"in developing countries today,malnutrition is the cause of 174 million children under five years of age being________(52),and 230 million being stunted in their growth.Such_________(53)represent deprivation,suffering and wasted human potential __________(54)a scale that is unacceptable from every point of view. Whether we think in __________(55)of humanitarian concern,common justice or development needs,they demand a ___________(56),both from national governments and from international community."At the end of January 1996,98__________(57)had national plans of action for nutrition and 41 countries had one under preparation,in keeping with their___________(58)made at the International Conference on Nutrition in Rome in December 1992. The global situation,__________(59),remains grim. It is now __________(60)that 6.6 million out of the estimated 12.2 million deaths_________(61)are among children under five.In some__________(62),such as sub-Saharan Africa and south Asia,stagnation (停滞)of nutritional improvement_________(63)with a rapid rise in population has result in an ________(64)increase in total number of malnourished children.Over 800 million people around the world still cannot_________(65)basic needs for energy and protein,more than two thousand million people lack essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced diets. Society is now much more diverse than ever before. Respect for life is a cardinal principle of the law. A storm moved directly over the island,demolishing buildings and flooding streets.