1 A 词汇表a(an)art acknowledge v abandon v ability n able a abnormal a aboard prep abolish v abortion n about ad & prep above prep, a & ad abroad ad abrupt a absence n absent a absolute a absorb v abstract a & n absurd a abundant a abuse v academic a & n academy n accelerate v accent n accept v access n & v accessible a accident n accommodation n accompany v accomplish v account n accountant n accumulate v accuracy n accurate a accuse v accustomed a ache v & n achieve v achievement n acid a acknowledge v acquaintance n acquire v acquisition n acre n across prep act n & v action n active a activity n actor n actress n actual a acute a AD abbr ad=advertisement n adapt v adaptation n add v addicted a addition n address n adequate a adjust v adjustment n administration n admirable a admire v admi