selecteen.征召员selectv.选择；挑选adj.精选的；优等的n.被挑选出来的人或物selecting cutting择伐selecting females挑选母鸡select the weight定权selecting targe t选择指标selecting problem选题selectron storage选数管存储器selecting careers择业selected teaching选项教学select of subject选题selectivity index选择性指数