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  3. Video game players may get an unexpected benefit from blowing away bad guys — better vision. Playing "action" video games improv

Video game players may get an unexpected benefit from blowing away bad guys — better vision. Playing "action" video games improv

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问题     Video game players may get an unexpected benefit from blowing away bad guys — better vision. Playing "action" video games improves a visual ability【C1】______tasks like reading and driving at night, a new study says.
    The ability, called contrast sensitivity function, allows people to discern even subtle changes【C2】______gray against a uniformly colored backdrop. It’s also one of the first visual aptitudes to fade with age.
    That’s【C3】______a regular regimen of action video game training can provide long-lasting visual power, according to work led by Daphne Bavelier of the University of Rochester.
    Previous research shows that gaming improves other visual skills, such as the ability to track several objects at the same time and【C4】______attention to a series of fast-moving events, Bavelier said.
    "A lot of different aspects of the visual system are being enhanced,【C5】______one," she said. The new work suggests that playing video games could someday become part of vision-correction treatments, which currently rely mainly on surgery or corrective lenses.
    "【C6】______you’ve had eye surgery or get corrective lenses, exposing yourself to these games should help the optical system to recover faster and better, you need to retrain the brain to make use of the better, crisper information that’s coming in【C7】______a result of your improved eyesight," Bavelier said.
    Expert action gamers in the study played first-person shooters Unreal Tournament 2004 and Call of Duty 2. A group of experienced nonaction gamers played The Sims 2, a "life simulation" video game. The players of nonaction video games didn’t see the same vision【C8】______, the study says.
    Bavelier and others are now trying to figure out exactly why action games【C9】______seem to sharpen visual skill. It may be that locating enemies and aiming accurately is a strenuous, strength-building workout for the eyes, she said.
    Another possible【C10】______is that the unpredictable, fast-changing environment of the typical action game requires players to constantly monitor entire landscapes and analyze optical data quickly. Finally, Bavelier said, the games’ rich payoff may also play a role.
    "It’s pleasing to be successful in your mission," she said. "When you combine rewards with these other "factors", then you get much more learning."
【C2】
选项 A、in light of
B、in shades of
C、in terms of
D、in guidance of
答案B
解析 本题考查介词词组。第一句在解释这是一种什么能力(对比敏感度——contrast sensitivityfunction)，以及这种能力的功能是什么。既然与contrast相关，那么往往会牵涉对比底色和对比内容，因此本题选用in shades of,意思是“……的底色”。
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