【题目】 The education program ________combining brain work with manual labor is being widely spread throughout the country.
A．to aim at B．aims at
C．having aimed at D．aimed at
在线课程【答案】D
【解析】
试题分析：本题考查定语从句的省略和时态。原句应为which is aimed at...此处主语一致，省略了which is，且本句的时态为一般现在时，并未出现完成时态，故选D