Which are gender-neutral nouns?
A.police officer
B.first-year student
C.firefighter
D.mail worker
正确答案：police officer ；first-year student ；firefighter ；mail worker
Which are gender-neutral nouns?
A.police officer
B.first-year student
C.firefighter
D.mail worker
正确答案：police officer ；first-year student ；firefighter ；mail worker