The role of selling in our society is toidentify and provide the goods and services that will satisfy the needs and wants of the consumer.
A、find out
B、search for
C、hunt for
D、look for

A.开始时需将树苗集中放置在某一树坑旁边，现将树坑从1到20依次编号．为使各位同学从各自树坑前来领取树苗所走的路程总和最小，树苗可以放置的最佳坑位的编号为：
A.①或①
B.⑨或⑩
C.⑨或⑩
D.⑩或⑩

A.下列说法中正确的有：
B.5倍
A.0个
B.1个
C.2个
D.3个