骨髓取材做细胞学检查，抽吸骨髓液多少量为恰当？

A. demand
B. recommend
C. advise
D. require

A. idealize
B. damage
C. conflict
D. improve

A. enjoyment
B. instruction
C. inquiry
D. extraction

A. devotes
B. contributes
C. opposites
D. translates