Ⅰ.重点单词
1．interaction n．交流；相互影响
interaction between sb./sth.＝interaction with sb./sth.与……的交流；与……相互影响
interact vi.交流；相互影响
interact with sb.与某人交流；与某人沟通
interact with sth.与……相互影响
2．appropriate adj.合适的；恰当的
be appropriate for/to对……合适
It is appropriate for sb.to do sth.适合某人做某事
It is appropriate(that)……是合适的
3．approve vt.赞成；认可；批准vi.赞同
approve of sth.赞成；同意
approve of sb./sb.'s doing sth.赞成某人做某事
approval n．[U]赞成；批准
