Over the last six months， the coronavirus pandemic（冠状病毒疫情） has affected different countries and regions in different ways．Here， we'll take a look at a few of the most important events that have happened．

   Italy shuts down

   On March 10， the Italian government decided to put the whole country on lockdownafter the number of cases（病例） in the country started increasing quickly， people were suggested not leaving their home．The first case was detected（检测到） as early as January 31．In the following weeks， the number of cases reached over 10， 000 by the time of the lockdown．The lockdown affected 16 million people across the country．Italy was one of the first of many countries that cami ed out lockdown s to prevent the spread of the virus．

   WHO declares pandemic

   On March 11， World Health Organization（WHO） offically characterized（描述） COVID﹣19 as a pandemic．This was because of a growing number of cases around the world．By this time， there were more than 20， 000 cases in Europe， including 1， 000 deaths， as well as 1， 000 cases in the US．

   Summer Olympics delayed

   On March 24， President of the International Olympic Committee（IOC） Thomas Bach announced the 2020 Summer Olympic Games， which were planned to be held in Tokyo， would be delayed until the following year in the interest of protecting public safety．

   US hits over l million cases

   On April 28， the US recorded officially over one million COVID﹣19 cases nationwide．This came just four days after it was announced that the virus had resulted in over 50， 000 deaths across the country．The virus spread rapidly across the country， as the first case had been recorded three months earlier．

根据短文内容，选择最佳答案．

（1）The events in the passage are all connected with 　　．

A．	Italy's lockdown
B．	US cases
C．	Olympic games
D．	the coronavirus pandemic

（2）In paragraph 2， the underlined word "lockdown" probably means 　　．

A．	封城
B．	控制
C．	关押
D．	锁定

（3）COVID﹣19 was officially announced as a pandemic because it 　　．

A．	caused the lockdowns
B．	had a growing number of cases in the world
C．	could result in death
D．	spread quickly in Europe

（4）2020 Summer Olympic Games in Tokyo will be delayed because 　　．

A．	people may not go during the pandemic
B．	the cases in Asia increased quickly
C．	it hasn't been well﹣prepared
D．	it's necessary to protect public safety

（5）It took 　　 for the number of COVID﹣19 cases in the US to reach over one milion．

A．	four days
B．	twenty﹣eight days
C．	three months
D．	four months