今天是2020年11月21日，大学英语四级白话测验今天举办。大学英语四级白话测验分三个部门，第一部门是自我先容和问答，第二部门是报告和会商，第三部门是问答。本场白话测验报告的主题为“避免沾染病的首要性”。比年来全世界沾染病风行态势十分严重，在本年新冠疫情大风行的布景下，避免沾染病变得尤其首要。如下展现一篇以“The importance of preventing infectious diseases ”为题的范文，供考生参考。

In recent years, the global epidemic situation of infectious diseases is very serious. Although the incidence of many infectious diseases has decreased significantly, infectious diseases are still the main threat to human health in the world.This year’s covid-19 pandemic, for example, killed thousands of people. I have to say that prevention and control of

infectious diseases are very important. First, with globalization, the world is now a village. If there is an infectious disease, it will spread to every corner of the world very quickly. Secondly, infectious diseases are highly contagious and spread quickly, posing a serious threat to people’s health and life safety. Finally, infectious diseases,

once widespread, can overwhelm health systems and affect other basic systems. If not prevented, it will have a serious impact on the stability of the whole society. So we need to prevent and control infectious diseases and reduce their impact on people’s health and society.