（II）
 
(A) tool
(B)rumors
(C)whether
(D)What's more
(E)letter
         There are so many   1     and gossip(八卦) online that it'soften difficult to know   2      the information is true.     3   ,news travels really fast on social media like Facebook. Nowcomputer scientists in Europe are developing a system. It helpsusers know a piece of news or information is true almost right now.The scientists hope that this   4    can stop users from believingfake stories online.
                                                                                                  (adapted from Live No.161)
【題組】1.