selective

selective schools.择优录取学生的学校

He has a very selective memory (= he chooses what he wants to remember and what to forget ) ..他的记忆选择性很强。

selective hydrogenation选择性加氢

selective attention选择性注意

selective breeding选择育种；选择性繁殖

selective absorption选择吸收

selective analysis重点分析

selective pressure择压力，选择压力

selective medium选择性培养基

selective dissemination of information信息的选择性传播；资讯的选择性传播

真题例句...the more selective a school...CET42009.12阅读理解