题目内容：

Good computer skills are desirable in today’s digital age, and playing computer games can help children practice those skills — as long as they don’t overdo it, scientists warn. A British study found that those who played computer games less than once a week achieved better grades at school than ones who played them twice a day or more often. The study also found that daily use of social media did not affect school performance.

“It was clear that social media didn’t have any impact. I think that’s more because social media is part of every child’s life. It’s the way they communicate. It’s the way they keep in touch with their friends,” said Celine McStravick of the National Children’s Bureau Northern Ireland.

Parents increasingly complain of having difficulty getting their children away from computer games. Some even seek help for their teenagers who they say are addicted to them. The study did not look into addiction, but suggested computer games can cause children to stay up late in the evenings，making them tired and less able to focus at school the next day.

Mark Starkey, the owner of the Heart of Gaming computer game outlet (批发商) in London, said there is also the difference between older games and the new ones.

“The ability to make games a lot more bigger, a lot more detailed, a lot more complex is here now. It’s going to hold their attention longer. ‘Oh my god, I have to see what happens next,’ etc. However, the old games challenge more your hand-eye coordination (协调), your speed, your timing, your reactions, rather than your imagination,” said Starkey.

The games industry has long claimed there is no proven link between games and addiction. But the new study says additional research is needed to establish the effect of computer game- playing on performance at school.

1.We can learn from the passage that       .

A. using social media daily has the same effect on students as computer games

B. older games have worse effect on students than newer ones

C. students may suffer from spending too much time playing computer games

D. there is no proven link between computer games and addiction

2.What’s Celine’s attitudes towards the use of social media?

A. Tolerant.    B. Supportive.    C. Doubtful.    D. Negative.

3.In which way do the old computer games benefit you?

A. Making you slay, up late at night.

B. Holding your attention much longer.

C. Distracting your attention on lessons.

D. Challenging your hand-eye coordination.

4.What can we infer from the passage?

A. It’s certain that most students are addicted to games.

B. Further study will go deep into the game-playing effect.

C. Old computer games will obtain the larger half of market.

D. There is no way to find a link between games and addiction.