There is such a group of singers in the western musical circle at present,who enter the business as online celebrities（名人）and then become top idols（偶像）and giant stars globally.They become popular for their videos online and then they are discovered by talent agents（代理人）and gradually cause huge storms in the musical circle.Troye Sivan,a singer who is nicknamed "chuoye"，became popular on YouTube from an early age.
As a popular video sharing website,YouTube has given rise to plenty of stars,creating a new celebrity culture.Providing a platform where anyone can post videos,YouTube presents the opportunity for anyone to achieve fame by simply uploading a short video.Sivan has been making YouTube videos since he was 12 to show his singing talent.In the digital age,Sivan has already developed large devoted audience online and his touching video blogs have earned him extreme popularity.
A survey has showed that US teenagers are more attracted to YouTube stars,which is a surprising result.YouTube stars are judged to be more attractive,outstanding and related than traditional stars.Looking at the survey comments and feedback（反馈），teens enjoy a close and real experience with YouTube celebrities,who aren't carefully directed by design.Teens also say they appreciate YouTube stars' sense of humor and risk-taking spirit,which are often limited by Hollywood stars.As a result,singers who make their first show in the traditional way no longer have a complete advantage in front of the audience.Online platforms open up a lot of doors for people.They become the best place to be discovered.



Why is Troye Sivan mentioned in Paragraph 1？ ______

A. To give an example for the topic.
B. To uncover the secret of success online.
C. To add more background information.
D. To introduce the topic of the passage.

What made Troye Sivan a success according to the author？ ______

A. Learning to sing at an early age.
B. Developing lots of fans online.
C. Sharing his family stories online.
D. Starting a different music style.

Why are YouTube stars so attractive in the digital age？ ______

A. They are more firmly connected with teens.
B. They are more hardworking than traditional stars.
C. They are often carefully designed.
D. They are discovered in a traditional way.

What is the author's attitude towards online platforms like YouTube？ ______

A. Worried.
B. Regretful.
C. Supportive.
D. Doubtful.