w <br />w <br />w <br />. <br />k <br />s <br />5 <br />u <br />. <br />c <br />o <br />m <br />来 <br />源 <br />： <br />高 <br />考 <br />资 <br />源 <br />网 <br />高 <br />考 <br />资 <br />源 <br />网 <br />( <br />w <br />w <br />w <br />. <br />k <br />s <br />5 <br />u <br />. <br />c <br />o <br />m <br />) <br />Passage 1 <br />Seasonal influenza is characterized by a sudden fever, cough, headache, muscle and joint pain, sore <br />throat and runny nose. Most people recover from fever and 1 symptoms within a week <br />without requiring medical attention. But influenza can 2 severe illness or death in people at <br />high risk. The time from infection to illness is about two days. <br />Yearly influenza epidemics can 3 affect all age groups, but the highest risk of complications <br />occur among children younger than age two, adults age 65 or older, and people of 4 age with <br />certain medical conditions, such as chronic heart, lung, kidney, liver, blood or metabolic diseases, <br />or weakened immune systems. <br />Seasonal influenza 5 easily and can sweep through schools, nursing homes or businesses and <br />towns. When an 6 person coughs, infected droplets get into the air and another person can <br />breathe them 7 and be exposed. The virus can also be spread by hands infected with the <br />virus. 8 transmission, people should cover their mouth and nose with a tissue when coughing, <br />and 9 their hands regularly. <br />Drugs for influenza are 10 in some countries and effectively prevent and treat the illness. <br />Some influenza viruses develop 11 to the antiviral medicines, limiting the effectiveness of <br />treatment. <br />Influenza epidemics occur 12 during autumn and winter in temperate regions. Illnesses <br />result in hospitalizations and deaths mainly among high-risk groups. Worldwide, these annual <br />epidemics result in about three to five million 13 of severe illness, and about 250 000 to <br />500 000 deaths. <br />Influenza can cause serious public health and economic problems. In 14 countries, <br />epidemics can result in high levels of worker absenteeism and productivity 15 . 16 <br />most people recover from a bout(轮) of influenza, there are large numbers of people who need <br />hospital treatment and many 17 die from the disease every year. 18 is known <br />about the effects of influenza epidemics in developing countries. <br />The most 19 way to prevent the disease or severe outcomes from the illness is vaccination. <br />Vaccination is especially important for people at higher risk of serious influenza complications, and <br />for people who live with or care 20 high risk individuals. <br />( ) 1. A. its B. it’s C. all D. other <br />( ) 2. A. cause B. lead C. result D. bring <br />( ) 3. A. lightly B. slightly C. seriously ...