阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
At the end of 2014, Tulsa, Oklahoma, sixth­grade teacher Melissa Bour received a friend ____ on Facebook from one of her students. She didn’t accept the request, but a quick browse through the girl’s friends list revealed the names of dozens of kids from her ____. Many of the students’ Facebook pages were completely ____， meaning even strangers could ____ the kids’ personal photos and messages.
“I saw middle fingers, students dressed inappropriately, and extremely ____ language，” Melissa says. “It was ____．” When she brought up her ____ in class, the students were not ____ at all. So she created a ____ of her own. With a bright green marker pen, she wrote on a piece of paper: “Dear Facebook: my 12­year­old students think it is ‘no ____’ that they are posting pictures of themselves... Please help me show them how ____ their images can get around.” She put a picture of the letter on her Facebook page and asked people to ____ it.
In hours, it was shared 108，000 times across dozens of states and four countries. She ____ it after eight hours, but it continued to spread. “I wanted to ____ them that it’s on the Internet forever，” she says.
As she explained the results of her ____ in class, the students’ eyes got bigger and bigger. “It scared a few of them into deleting their pages ____，” she says. Others have removed inappropriate posts and used privacy settings to ____ their pages.
Her ____ wasn’t to scare them off social media but to push them to be ____ of what they post. Melissa says, “I tell them, ‘It doesn’t ____ you have to just because everyone else is sharing.’”

A．invitation B．demand C．order D．request

A．family B．college C．classroom D．company

A．public B．famous C．secret D．unknown

A．watch over B．search through C．hold back D．hand in

A．proper B．polite C．simple D．rude

A．despairing B．comforting C．disturbing D．exciting

A．result B．discovery C．suggestion D．wish

A．worried B．satisfied C．pleased D．disappointed

A．post B．picture C．article D．news

A．need B．big idea C．wonder D．big deal

A．urgently B．quickly C．slowly D．badly

A．know B．deliver C．share D．say

A．prevented B．kept C．copied D．deleted

A．promise B．persuade C．show D．ask

A．experiment B．lesson C．study D．research

A．only B．completely C．recently D．hardly

A．display B．create C．manage D．print

A．mention B．intention C．question D．imagination

A．mindful B．fearful C．skilful D．thoughtful

A．matter B．work C．count D．mean