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单选

The case history of twins appears to support the conclusion that _________.

  • A.individuals with identical brains are seldom tested
  • B.an individual's intelligence is determined only by his environment
  • C.lack of educational opportunities blocks the growth of intelligence
  • D.changes of environment produce changes in the structure of the brain
试题出自试卷《2016江苏专转本英语真题及答案解析》
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