题目内容：

People playing computer games to train their brains might as well be playing Super Mario, a new research suggests. In a six-week study, experts found people who played online games designed to improve their cognitive skills didn’t get any smarter．

    Researchers recruited（招募） participants from views of the BBC’s science show Bang Goes the Theory．More than 8,600 people aged 18 to 60 were asked to play online brain games designed by the researchers to improve their memory, reasoning and other skills, for at least 10 minutes a day, three times a week．

1.What’s the purpose of online brain games according to the designers?

    A．To take part in the study.

    B．To draw public attention to computer.

    C．To provide free service to teenagers.

    D．To improve players’ IQ.

2.How many people were inveolved in the study made by the researchers?

    A．About 60.        B．Only 2700.       C．8600 or so.      D．Around 11,300.

3.．What’s the result of the study about online games?

    A．Those who didn’t play online games felt disappointed.

    B．Those who played online games proved smarter.

    C．Online games don’t improve the players’ skills at all.

    D．Online games will be more popular than before.

4.The best title for the passage may probably be          .

    A．Don’t Play Games Any More           B．New Study of IQ

    C．Brain Games Don’t Raise IQ          D．Brain Games and Super Mario