Our English teacher is always very       and makes us feel      .

A．kind, relaxed

B．kind, relaxing

C．strict, to relax

D．strict, relaxed

医护人员在有创操作中或近距离接触患者时需（）

A.戴外科口罩

B.戴医用防护口罩

C.穿隔离衣

D.戴一次性手套

E.戴防护镜