【简答题】句型转换。 1. David's mother wants to buy him some nice food.(同义句) David's mother _____ _____ to buy some nice food _____ _____ . 2. There is only one English book in my bag. (对划线部分提问) _____ _____ English...
【判断题】David wants to iron his business clothes before his meeting the next morning.
【单选题】加工锥度和直径较小的圆锥孔时,宜采用的方法
【单选题】已知如图所示的哈夫曼树,那么电文CDAA的编码是( )A.110100 B.11011100 C.010110111 D.11111100【图片】
【单选题】David wants to be _____ engineer while Cathy wants to be _____ doctor. [ ]