/sɪ'lektɪv; sə`lɛktɪv/
adj
1 using or based on selection 选择的; 选择性的
*the selective training of recruits, ie the training of specially chosen recruits 对挑选出的新成员的培训
* a selective weed-killer, ie one that kills weeds but not other plants 选择性除草剂（专除杂草而不伤及其他植物的）.
2 ~ (about sb/sth) tending to choose carefully 挑拣的
*I'm very selective about the people I associate with. 我与他人来往极慎重, 不滥交.

adj
careful about what you choose to do, buy, allow etc
selective about/in
　We're very selective about what we let the children watch.
　selective schools (=that choose which students to accept)
　He has a very selective memory (=he chooses what he wants to remember and what to forget) .
affecting or relating to the best or most suitable people or things from a larger group
　selective breeding
>selectivelyadv
>selectivity [sɪ,lek'tɪvɪti/