重点讲解：
1. depend on 依靠；依赖；
These charities depend on the compassionate feelings and generosity of the general public.
这些慈善团体依赖于公众的怜悯之心和慷慨解囊vBR(Tiz1j7QM1=SzaDk。
2. level off （数字或数量）趋向平缓，趋于稳定；
The figures show evidence that murders in the nation's capital are beginning to level off.
数据表明，该国首都谋杀案件的数量开始保持在稳定的水平l6~vXNr74H=y,。
3. as a whole 整体而言；总体上；
The pupil's answers may not have been reflective of what the class as a whole had understood.
这个学生的回答也许并不能代表该班级整体的理解nS^XT5%pR^lqkw#E。
4. put sth. first 视…为最重要；把…放在首位；
We believe that quality is the soul of an enterprise. therefore, we always put quality first.
我们认为质量是一个企业的灵魂，因而，我们总是把质量放在第一位来考虑5KGAoa@vdpqMo+)|YN。