Grove English Communication Ⅲ

hidden
stride
path
segregation
payment
decent
secretary
sexism
contribution
calculation
slide
calculate
racial
orbit
trailblazer
separate
mathematician
deserve
eventually
promote
specialist
minority
advance
honor
trajectory

analysis
spaceflight
unless
presidential
civilian
midst
historical
backdrop
chronology
ban
ethnic
discrimination
defense
industry
segregate
Dorothy Vaughan
Mary Jackson
Katherine Johnson
John Glenn
Alan Shepard
Barack Obama
Roosevelt
the Soviet Union
Sputnik