A:picked up, few
B:took up, few
C:brought up, a few
D:picked up, a few
Henry stopped his car and____(避免)a traffic accident.
如图为人体血液循环示意图,其中代码A,B分别表示肺与外界的气体交换方向,a、b、c、d表示心脏的四个腔,①~⑥表示有关的血管,请分析回答: