selective
/sɪˈlektɪv; 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.