题目内容：

    Children are becoming addicted to social media for their sense of self-worth, a major study warned. It found many youngsters measure their status(形象) by public approval they get online, often through “likes”. Some change their conduct in real life to improve their image online.

The research into youngsters aged from 8 to 16 was carried out by Children's Commissioner(专员) Anne Longfield. She said social media firms were exposing children to major psychological risks, with some youngsters starting secondary school ill-equipped to deal with the huge pressure they faced online. Youngsters felt their friendships could be at risk, not responding to social media posts quickly and around the clock.

Children aged 8 to 10 were "starting to feel happy" when others liked their posts. However, those in the 10 to 12 age group were "concerned with how many people like their posts", indicating a “need” for social recognition that gets stronger the older they become.

Children tended to compare themselves to others online. "Then there is this push to connect—if offline, will you miss something, will you miss out, will you show you don't care about those you are following, all come together in a huge way at once." Miss Longfield said, "For children it’s very difficult to handle." The Commissioner found children as young as 8 were using social media platforms largely for fun.

However, the research—involving eight groups of 32 children aged 8 to 12—suggested that as they grew, they became increasingly anxious online. When they started secondary school—at age 11—children were already far more conscious of their image online and felt more pressure to ensure popularity of their posts, the research found.

Meanwhile, they still did not know how to dispose of mean-spirited jokes, or the possible sense of inability if compared with celebrities(名人) or more brilliant friends online. They also faced pressure to respond to messages at all hours of the day—especially at secondary school when more youngsters have mobile phones.

The Commissioner advocated schools and parents do more to prepare children for the emotional minefield(雷区) . "It's vital that new age-appropriate relationship and sex education lessons help equip children to deal with growing demands of social media.” Social media companies must "take more responsibility" and monitor websites better or adjust their websites to the needs of youngsters.

1.What may account for Children’s addiction to social media?

A.To get their status recognized. B.To reduce psychological risks.

C.To change their conduct in real life. D.To deal with huge emotional pressure.

2.How was the research conducted?

A.It covered children of all ages.

B.It sought assistance help from parents.

C.It was sponsored by social media companies.

D.It divided children into groups and compared them.

3.During the process of addiction, children have a tendency to ________.

A.switch off from social media platforms

B.become less conscious of their image online

C.pick up anxiety and pressure steadily while becoming older

D.develop skills to dispose of mean-spirited jokes and the sense of loss

4.How should the problem solved according to Anne Longfield ?

A.Children should be banned from visiting the web.

B.Schools must keep track of children's use of social media.

C.It demands cooperation among families, schools and companies.

D.Social media companies need to create more apps to satisfy youngsters.