17．Fourth-grader Jaden Darnell has an Xbox 360and a PlayStation 3．Like many other kids，he also plays games on his phone．At times，he says，it can be hard to tear himself away from a device （设备），especially when he's playing NBA General Manager．
What makes some video games so attractive？Raph Koster，an expert on game design，says game makers employ a great deal of knowledge about what keeps people playing．He says that whether they know it or not，players like getting feedback （反馈） that they can see or hear．The game Peggle，for example，plays the song"Ode to Joy"every time you succeed at beating a level．"It gives you this amazing amount of celebration，"says Koster．
Game makers also know that once players have put in the time and effort to achieve a goal，they don't like to give up．So some games are easy at first and become more challenging （挑战性的）．At that point，the players may be offered a resource （资源） that makes winning easier．"The game creates a problem that it offers to solve for you in exchange for cash，"explains Ian Bogost，a professor who studies video games at the Georgia Institute of Technology．When players are connected to the Internet，developers can observe what they do．By recording players'choices，game companies can find out what keeps people interested in and what makes them most likely to buy things．
Besides game developers，scientists are also paying attention to the power of games．Adam Gazzaley，a scientist at the University of California，has developed games that improve attention and memory in older adults．Now Gazzaley and his team are designing brain-building games for kids．"We think that how video games really pull you in and demand your attention can be used to help improve how the brain process （处理） information，"he says．To test the games'effects on the mind，Gazzaley records brain activity while people play．He says that one day，doctors might advise patients to play video games to improve their intelligence．
29．It's difficult for Jaden Darnell toA．
A．stop playing games
B．play with other kids
C．play NBA General Manager
D．turn his attention to new games
30．Why do game makers create games that are easy at first and then become more challenging？B
A．To attract more players．
B．To make lots of money．
C．To challenge themselves．
D．To test players'intelligence．
31．What's Adam Gazzaley's attitude towards the future of video games？B
A．Worried．
B．Hopeful．
C．Doubtful．
D．Uninterested．
32．What would be the best title for the text？D
A．Say no to video games
B．The future of video games
C．It is game time!
D．More than a game？
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了很多人都对游戏痴迷，但游戏并非只有坏处，它也可以益智健脑，因此游戏也可以是充满希望的．
解答 29．A．细节理解题．根据文章第一段"Like many other kids，he also plays games on his phone．At times，he says，it can be hard to tear himself away from a device"可知对Jaden Darnell来说停止玩游戏很难；故选A．
30．B．推理判断题．根据文章第二段"Game makers also know that once players have put in the time and effort to achieve a goal，they don't like to give up．So some games are easy at first and become more challenging （挑战性的）"可知之所以制作游戏从简单到难还不放弃是因为不愿意浪费自己的精力想赚更多钱；故选B．
31．B．推理判断题．根据文章第三段"Adam Gazzaley，a scientist at the University of California，has developed games that improve attention and memory in older adults"可知他认为游戏可以益智健脑因此游戏的未来是充满希望的；故选B．
32．D．主旨大意题．通读全文，可知文章主要讲述了很多人都对游戏痴迷，但游戏并非只有坏处，它也可以益智健脑，因此游戏也可以是充满希望的；因此最佳标题为这不仅仅是一场游戏；故选D．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
