Part V Cloze (15 minutes)
　　Children have been said to have brain-injured child syndrome, hyperactive (极度活跃的) child syndrome and attention-deficit disorder (ADD).As early as the 1940's, psychiatrists have 62 children with hyperactivity and extremely distracted and impulsive. These frequent name changes show how 63 researchers are about the causes of the problem and the diagnostic (诊断) 64 for the disorders.
　　In the past several years．the people who study attention deficit hyperactivity disorder(ADHD)have 65 to clarify the disorder’s causes and 66，and have reasons to believe mat it may be 67．Today’s view on this disorder is very different from the beliefs of just a few years ago．
　　Researchers are finding that ADHD is nota disorder of just attention，but is from a developmental 68 in the brain’s circuitry and self-control．The loss of self-contr01690ther important brain functions compulsory foll 70 attention．ADHD 71 two sets of symptoms：inattention and a72 of hyperactive and impulsive behaviors．Most children are more active and 73 than adults are．Children are more inconsistent．74 by brief actions．The younger the child，the 75aware they are．
　　This behavior is a 760f a problem when it is displayed more in them than in their 77．Boys are at least three times more 78 than girls to have ADHD．Studies have found that ADHD in boys outnumbers girls9 to 1：this is because boys are genetically likely to develop disorders in thenervoussystem．These behaviors 790ccur between the ages of 3 and 5．80．some children don’t start to develop the disorder until late childhood or earlyadolescence．Researchers are unable to find the reasons for this 81．
　　62．A．formulated
　　B．labeled来源：www.examda.com
　　C．patented
　　D．licensed
　　63．A．skeptical
　　B．unaware
　　C．unexpected
　　D．uncertain
　　64．A．criteria
　　B．requirements
　　C．legislation
　　D．measures
　　65．A．initiated
　　B．commenced
　　C．originated
　　D．embarked
　　66．A．symptoms
　　B．defects
　　C．diseases
　　D．syndromes
　　67．A．ethnic
　　B． intrinsic
　　C．genetic
　　D．inherent
　　68．A．absence
　　B． lack
　　C．loss
　　D．failure
　　69．A．degrades
　　B．weakens
　　C．performs
　　D．fulfils
　　70．A．sustaining
　　B．entertaining
　　C．maintaining
　　D．retaining
　　71．A．implies
　　B．possesses
　　C．relates
　　D．involves
　　72．A．correlation
　　B．coherence
　　C．combination
　　D．cooperativenes
　　73．A．distractive
　　B．irrational
　　C．competitive
　　D．controversial
　　74．A．effected
　　B．affected
　　C．conceived
　　D．endeavored
　　75．A．more
　　B．1ess
　　C．much
　　D．little
　　76．A．sign
　　B．signal
　　C．mark
　　D．symbol
　　77．A．adults
　　B．equivalents
　　C．followers
　　D． peers
　　78．A．infectious
　　B．accessible
　　C．prone
　　D．inclined
　　79．A．presumably
　　B．incidentally
　　C．obviously
　　D．generally
　　80．A． Nevertheless
　　B． Moreover
　　C．Therefore
　　D．Furthermore
　　81．A．pause
　　B．postpone
　　C．delay
　　D．recession

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