三、閱讀測驗【請依照段落上下文意，選出最適當的答案】       TikTok（抖音）is the fastest-growing social media app, with about 500 million regular users, although thecompany doesnʼt disclose its userbase. Itʼs estimated to have been downloaded more than a billion times on app stores.The app lets people post videos. It is known for clips of teenagers lip-syncing（對嘴唱）and dancing to the latestpopular music. The company says it is most popular with people 16-24 years of age, but there is evidence that manyusers are under 13, which is against the app's rules. The firm has already been fined 5.7 million dollars by a USregulator after being accused of collecting personal details from users under 13 without their parentsʼ consent. TheUK's Information Commissioner revealed she had also launched an investigation into whether the app was doingenough to protect its youngest users. Video makers with more than 1,000 followers are allowed to broadcast live onthe platform. It is during these live streams that fans can send digital gifts to show their appreciation. Gifts appear ason-screen animations and cost between 5 pence and 48.99 pounds. The appʼs biggest stars can earn thousands ofpounds in one live stream. Livestream gifting originated in China—where TikTokʼs owner Bytedance is based. Thepractice is far more popular there. Professional “cam girls” earn huge amounts from their audiences.        TikTok said it was investigating digital gifting. In a statement, it said: “We do not tolerate behaviors that aredeceptive in nature and we are sorry to hear some of the users' experiences. We recognize there is always room forimprovements in terms of making guidelines and information more accessible, clear and easy-to-understand for allusers. We value your feedback and will further strengthen our policies and product features.” The company gave nodetails on what policies or community guidelines it would change.
【題組】11. What is the passage mainly about?
(A) A famous cam girl in China
(B) A new policy to protect people’s privacy
(C) A problem with a popular social media app
(D) A novel way to entertain and make money at the same time