题目内容：

People who play computer games to train their brains might as well be playing Super Mario, new research suggests.

In a six-week study, experts found people who played online games designed to improve their cognitive(认知的) skills didn’t get any smarter.

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.

They were compared to more than 2,700 people who didn’t play any brain games, but spent a similar amount of time surfing the Internet. All participants were given an “IQ test” before and after the experiment.

Researchers said the people who did the brain training didn’t do any better on the test after six weeks than people who had simply been on the Internet.

“If you’re(playing these games) because they’re fun, that’s absolutely fine,” said Adrian Owen, assistant director at Britain’s Medical Research Council. “But if you’re expecting these games to improve your IQ, our data suggests this isn’t the case.”

Computer games that are supposed to improve memory, reasoning and other cognitive skills are played by millions of people worldwide, though few studies have examined if the games work.

“There is precious little evidence to suggest the skills used in these games transfer to the real world,” said Art Kramer, a professor of psychology at the University of Illinois, US.

Instead of playing brain games, Kramer said people would be better off getting some exercise. He said physical activity can help produce new brain cells.

Other experts said brain games might be useful, but only if they weren’t fun.

“If you set the level for these games to a very high level where you don’t get the answers very often and it really annoys you, then it may be useful,” said Philip Adey, a professor of psychology at King’s College in London.

If people are enjoying the brain games, Adey said they probably aren’t being challenged and might as well be playing a regular video game.

He said people should consider learning a new language or sport if they really want to improve their brain power. “To stimulate(激发) the intellect, you need a real challenge,” Adey said, “Getting smart is hard work.”

1.According to the article, which of the following is NOT useful to develop brain power?

A. Learning a language.    B. Getting some physical exercise.

C. Playing challengeable games.    D. playing fun games.

2.What can we infer from the first two paragraphs?

A. Playing brain games is as effective a means of improving the brain as Super Mario.

B. Playing Super Mario is a better means of improving the brain.

C. Playing brain games can’t improve cognitive skills.

D. Playing computer games can train the brain.

3.Which of the following statements is true?

A. Many studies show that brain games are an effective means of improving cognitive skills.

B. The skills used in brain games can be transferred to real life.

C. Participants took IQ test twice during the research on the effectiveness of brain games.

D. Surfing the Internet is a more effective means of improving cognitive skills than video games.

4.Which is another way of summing up Adey’s argument in the last paragraph?

A. Practice makes perfect.    B. Where there is a will, there is a way.

C. No pains, no gains.    D. A bad beginning makes a bad ending.