3、词块] ①digestill/well 难/易消化②digestrapidly/slowly迅速地/慢慢地消化③digestbriefly简单了解④digestcarefully仔细了解2.abusevt.&n.滥用[联想] ab开头高频词①abundantadj.丰富的②abnormaladj.不正常的③abroadadv.在国外④abstractadj.抽象的⑤abandonv.抛弃,逃离⑥absorbv.吸收⑦absencen.不在,缺席;缺乏⑧aboardadv.在船(飞机,火车等)上3.opposevt.反对;不赞成[同义] ob