Ⅰ.重点单词
1．exchange n．交换；交流 vt.交换；交流；交易；兑换
exchange sth. for sth.用……来交换……
exchange sth. with sb.与某人交换某物
in exchange for交换
2．design n．设计；设计方案 vt.设计；筹划
be designed for/to do sth.计划做某事
by design故意地；蓄意地
3．anxious adj.焦虑的；不安的
be anxious about为某事忧虑、担心
be anxious to do渴望……，急于……
anxiety n．焦虑；担心；渴望
4．annoy vt.使恼怒；打扰
5．frightened adj.惊吓的；害怕的
be frightened to do sth.害怕做某事
be frightened of(doing) sth.害怕(做)某事
