To prevent the spread of the novel coronavirus，governments at every level in China have been using many different control measures.
    In heavily一affected areas，the government has chosen to lock down cities.The decision proved effective（有效的）in stopping the virus' spread at its root.
    In some villages，people put up red banners（条幅）or used loudspeakers to educate people about the virus.Many communities also set up checkpoints to check people's temperatures，keep records of their travel history，keep non—residents（非住户）out of the community，and make sure that people quarantine（隔离）themselves after returning from high--risk areas.Some community workers also help those who are quarantined at home by bringing in food or drugs，taking out the garbage，and offering psychological（心理的）advice.The community workers have built the first line of defense（防御）______the virus across China.There are millions of community workers in 650，000 urban and rural communities across the country.Many people from all walks of life have volunteered to do this job.
    "In the face of an unexpected outbreak，it's amazing to see that China could mobilize（动员）people on such a large scale（规模），"Li Baoping from the Ningxia Academy of Social Sciences told Xinhua."Great governance capacity（治理能力）at all levels gives us confidence in winning the battle."

（1）What does the underlined word "its" in paragraph 2 refer to ？（根据短文回答问题）

virus'

virus'

（2）What do the community workers do to help people quarantined at home？（List at least 2 points）（根据短文回答问题）

Bring food or drugs，take out the garbage，and offer psychological advice.

Bring food or drugs，take out the garbage，and offer psychological advice.

（3）Fill in the blank with a proper preposition.（在空白处填入一个恰当的介词）

against

against

（4）Translate the underlined sentence into Chinese.（将划线句子翻译成汉语）

面对突如其来地疫情大爆发，看到中国能如此大规模的动员群众着实令人震惊。

面对突如其来地疫情大爆发，看到中国能如此大规模的动员群众着实令人震惊。

（5）Give a proper title for the passage.（给文章拟一个恰当的标题）

Governments at every level fights .

Governments at every level fights .