selection of tree

例句：

1. 1. Theteacher selected the best students to participate inthe competition.
   老师挑选了最好的学生参加比赛。
2. 2. He made a selection of books fromthe library.
   他从图书馆挑选了一些书。
3. 3. Thecompany selected a new manager for the position.
   公司为这个职位挑选了一位新经理。