今年大豆比去年增产二成，就是说今年大豆比去年增产______%．
今年大豆比去年增产二成，就是说今年大豆比去年增产20%；
故答案为：20．
Up to now, the program ________ thousands of children who would otherwise have died.
A．would save
B．saves
C．had saved
D．has saved
瀑布模型( )。
A．是一种软件开发方法学
B．给出了软件求解的计算逻辑
C．是一种特定的喷泉模型
D．给出了软件开发中包含的活动
children who would otherwise have died.