党的十六届五中全会提出我国要“加快建设资源节约型、( )社会”。
A．劳动密集型
B．环境友好型
C．经济集约型
D．科技先进型
参考答案：B
－He asked Tom, “Have you finished your homework？”
－He asked Tom .
A．if had he finished his homework.
B．whether he had finished his homework
C．if he had finished your homework.
D．if you had finished your homework.
反击式破碎机的反击板的结构形式是影响破碎机破碎（）的重要因素。
