A、 It changed its policy on posts with violent speech.
B、 It identified people who hate terrorists.
C、 It raised the anger of terrorists.
D、 It suspended some accounts for religious reason.

【正确答案】 A

【答案解析】解析：新闻开头提到，推特现已改变政策，并尝试找出散播暴力言论的人。之后又提到会对这些人封号，A项“改变了对暴力言论的政策”是对以上信息的归纳，故选A项。

A、 Updating their information frequently.
B、 Posting hateful things regularly.
C、 Using multiple accounts.
D、 Suspending some of their accounts.

【正确答案】 C

【答案解析】解析：新闻中提到，Twitter也禁止使用多个账号(bans people from using multiple accounts)，而这正是恐怖分子活跃在网上的方法。由此可推断恐怖分子常用的方法就是“使用多个账号”，C项正确。

A、 They can't stop terrorists communicating through this channel.
B、 They didn't adjust their policy over the past year.
C、 They didn't make an effort to gain promotion from the public.
D、 They don't update their service frequently enough.

【正确答案】 A

【答案解析】解析：新闻末尾提到，Twitter、Facebook和其他社交网络都受到了批评，因为他们不能阻止恐怖主义利用他们的渠道进行交流(failing to stop terrorism from using their channels to communicate)。A项所述与新闻的内容是一致的。