Those who plan to travel abroad are urged to have the COVID-19 ______ before their departure to build immunity against the virus.
Avaccine正確答案
Baccentuation
Cdiagnosis
Dinfection
答案與詳解
vaccine 意為「疫苗」,接種疫苗才能建立免疫力(build immunity),與句意完全吻合,為正解。
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