18．A.including

　　B．involving

　　C．excluding

　　D．exposing

　　答案　B　[involve的含义为“涉及”，有几起涉及打孩子的案子都上了法庭。]

　　19．A.decision

　　B．responsibility

　　C．desire

　　D．intention

　　答案　A　[如果父母不采取太多的暴力(措施)，打不打孩子由他们来决定。]

　　20．A.Luckily

　　B．Hopefully

　　C．Probably

　　D．Unfortunately

　　答案　C　[既然人们在这件事情上有分歧，所以讨论很可能还要继续下去。luckily“幸运地”；hopefully“有希望地”；unfortunately“不幸地”，均不符合文意。]

　　Ⅴ.阅读理解

　　In action video games，you have to act fast to avoid monsters，fight the bad guys and remove zombies(僵尸)—which come at you from every side.You have to pass all the levels，collect all the right things，watch every corner of every room and listen carefully.You never know where trouble is developing，but you know it's out there somewhere.

　　According to a recent study，there's something else going on in the brains of action game players：They're getting better at using sights and sounds，to make quick decisions.And not just decisions that have to do with the imaginary world of the video game，says Daphne Bavelier.

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