题目

We have bought two      for the coming party. A.box of apple                                 B.boxes of apples C.box of apples                                D.boxes of apple 答案：B  box及apple都是可数名词。“两盒苹果”表示为two boxes of apples。5．点（-1，2）向右平移2个单位，再向下平移4个单位，所得的坐标为（1，-2）．