105、9.It is important to that a dynamic programming approach is only justified if there is some degree of overlap in the subproblems.

197、Interest in是利息

196、make decisions是

195、How much是多少钱

194、量词放在名词前面并修饰名词,一般按其修饰可数名词和不可数名词来划分。

193、at once是

192、is...satisfied with是……满意

191、overcome意思是

190、The purpose of his recent trip to Hangzhou was to attend a meeting

189、I guess there are still some things we both have to learn together.

188、Dad had lost any purpose in life