题目

After the new technique was introduced, the factory produced ___trucks in 2011 as the year before.    A. as twice many      B. as many twice    C. twice as many    D. twice many as 答案：C为紧急安置100名地震灾民，需要同时搭建可容纳6人和4人的两种帐篷，则恰好能安置的搭建方案共有（ ）A．8种B．9种C．16种D．17种