COVID-19 rapid tests are ___ for workplace testing and screening of employees required to be on-site.
Aaground
Bdeformed
Cjettisoned
Dmandatory正確答案
答案與詳解
mandatory 意為「強制的、義務的」,對應 required to be on-site 的員工必須受檢,語意完全契合。
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