题目内容：

How to Avoid the Coronavirus? Wash Your Hands

As a New York Times correspondent in China, I _______ the SARS outbreak in 2002 and 2003 during which a _______ coronavirus was first detected in Guangdong. My two children attended _______ school in Beijing throughout the outbreak.

The International School of Beijing, where my children were _______ , was one of the few in the capital that stayed _______ throughout the SARS outbreak.

The school _______ a bunch of simple precautionary _______: a stern note to parents _______ them not to send a child to _______ who was sick and warning them that students would be ________ for fevers with ear thermometers(耳温枪/耳温计) at the school door. There was no ________ of food at lunch. The teacher led the kids in ________ hand washing throughout the day at classroom ________, while singing a prolonged “hand washing song” to ________ they did more than a cursory(马虎；草率) pass under the tap with water only.

With those precautions ________, I observed something of a public ________ miracle: Not only did no child get SARS, but it seemed no student was sick with anything at all for ________ on end.

The World Health Organization ________ the SARS outbreak contained in July 2003. But, oh, those ________ persisted. The best first-line defenses against SARS or the novel coronavirus or most any virus at all are the ones that Grandma and ________ taught us, after all.

1.A.witnessed B.covered C.interviewed D.experienced

2.A.new B.latest C.novel D.strange

3.A.middle B.high C.elementary D.kindergarten

4.A.patients B.partners C.classmates D.students

5.A.open B.close C.lock D.control

6.A.organized B.instituted C.founded D.arranged

7.A.laws B.policies C.agreements D.notices

8.A.urged B.persuading C.warning D.reminding

9.A.hospital B.park C.school D.clinic

10.A.screened B.measured C.estimated D.figured

11.A.sharing B.robbing C.eating D.throwing

12.A.always B.frequent C.occasion D.time

13.A.desks B.chairs C.pipes D.sinks

14.A.forced B.reminded C.ensure D.encouraged

15.A.in place B.in power C.in order D.in need

16.A.behavior B.health C.study D.life

17.A.months B.days C.years D.hours

18.A.told B.announced C.reported D.declared

19.A.hobbies B.interests C.habits D.characters

20.A.common ground B.common property C.in common D.common sense