1 a host of 大量2 a test for检测目的3 a test on对进行测试4 a test with检测手段5 above all 最重要的;6 according to根据7 achieve equilibrium取得平衡8 achieve ones purpose达到目的9 achieve success 获得成功10 achieve victory获得胜利11 act on 遵照行动,作用于;12 act on对有影响13 add up to 总计,合计14 add to 把加到.15 adhere to 坚持,奉行;16 after all 毕竟,均不合题意;17 agree on对取得一致意见18 agree to同意19 agree with sb.同意某人的话20 along with 和一道,和一起;21 alternate (with)交替;22 amou