下面的这道题想问最后一句话的意思 1）。Ben and Ann are among 7 contestants from which 4 semifinalists are to be selected. Of the different possible selections, how many contain neither Ben nor Ann? A, 5 B, 6 C, 7 D, 14 E, 21 how many contain neither Ben nor Ann? 这半句话是说Ben和Ann同时都不包括在内，还是说或不包括Ben或不包括Ann。 谢谢大家啦！！ 愉快！ | 
