This year's pandemic (流行病) spreads around the globe with record-breaking speed. It has taken less than two months for the H1N1 to spread, while previous pandemics took six months or longer. Yet Dr. Keiji Fukuda of the World Health Organization warns this global occurrence is still in the early stages. "We have a very large global population, and it is quite clear that we'll continue to see spread of this virus through countries, and then among countries," he said. Most of the patients have been teenagers, between 12 and 17 years old. But the virus is spreading more deeply into many communities and the WHO says the average age of patients now appears to be getting slightly older. While young people and pregnant women are still at higher risk for contracting the H1N1 virus, health officials also caution that patients with certain diseases are easy to be infected. Some clinical trials of potential vaccines (疫苗) are underway, others will start soon. The European Medicines Agency says large-scale clinical trials will be ignored in order to get vaccines into the general population as soon as possible. Health officials in Britain, Greece, France and Sweden have announced they will begin inoculations (接种) among the public possibly within weeks. The WHO's Dr. Fukuda has not criticized that decision, but expressed concern about rushing vaccine production too soon. "There are certain things which cannot be compromised," he explains. "And one of the things which cannot be compromised is the safety of vaccines. There can't be any questions whether the vaccine is safe or not." Meanwhile, WHO says countries with widespread infections have switched from reporting individual testing of all patients to monitoring and reporting trends in the population. According to the WHO, testing of patients has strained the laboratory capacity of many countries. Dr. Fukuda believes health officials can still accurately predict the pandemic's size. "We know that the total number of laboratory confirmed cases is really only a part of the total number of cases," he asserts. Recently, the international health organization said it would no longer publish global tables reporting the number of new cases for all countries.1. According to the passage, H1N1 is different from other pandemics in that it can ________.A) pose special threat to teenagersB) spread with an alarming speed C) infect people of all racesD) cause much more deaths2. What does Dr. Keiji Fukuda think of the future development of H1N1?A) It will reach its final stage in six months.B) It will stop as vaccines are underway.C) It will spread among more countries. D) It will become milder as winter comes.3. On average, who are most likely to be infected with H1N1?A) Newly born babies.B) People with colds.C) Old people.D) Young people. 4. What does Dr. Fukuda think of the inoculations of vaccines in Europe?A) He is worried about the side-effects of the vaccines.B) He is concerned with the safety of the vaccines. C) He is doubtful of the effectiveness of the vaccines.D) He is critical of the use of vaccines without trials.5. According to the WHO, the current focus of fighting against H1N1 should be on ________.A) predicting the future trend B) researching effective vaccinesC) treating infected patientsD) reporting numbers of cases