2. 考研
  3. A set of genes play a role in learning to read and do math, but this ability is not just gene-driven,【C1】________schooling and h

A set of genes play a role in learning to read and do math, but this ability is not just gene-driven,【C1】________schooling and h

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问题     A set of genes play a role in learning to read and do math, but this ability is not just gene-driven,【C1】________schooling and help from parents are also vital【C2】________.
    Early mathematical ability and literacy are known to【C3】________in some families, but the genes【C4】________affect this have until now been【C5】________unknown.
    Scientists looked into a data pool called the Twins Early Development Study, which【C6】________12-year-olds from nearly 2,800 British families.
    The team compared twins and【C7】________children to see how they【C8】________in tests for maths and reading comprehension, and then matched the children’s genomes.
    Between 10 percent and half of the genes in-volved in reading were also involved in math, they found, and tiny variants in these【C9】________genes influence skill level.
    【C10】________it’s also clear how important our life experience is in making us better at one or the other. It’s this complex【C11】________of nature and nurture as we grow up【C12】________shapes who we are.
    Professor Robert Plomin said the study was the first to estimate the【C13】________from DNA alone on learning ability.
    But, he stressed, the genetic valiants that were identified were not【C14】________"literacy or numeracy" genes.
    【C15】________they formed part of a more complex mechanism in which many genes each【C16】________a small, but combined, effect on learning ability.
    "Children differ【C17】________in how easy or difficult they find learning, and we need to recognize and【C18】________these individual differences," said Plomin.
    "Heritability does not【C19】________that anything is set in stone—it just means it may take more effort from parents, schools and teachers to【C20】________the child up to speed."  
【C7】
选项 A、identical
B、similar
C、adequate
D、unrelated
答案D
解析 空格所在的句子说：研究组要“对比”这些双胞胎和________的孩子。既然要比较，就是在双胞胎和“非”双胞胎的孩子之间进行。故四个选项中选择一个与“非”双胞胎含义有关的，即D项unrelated“没有血缘关系的”。 A项identical“相同的”和B项similar“相似的”，均与前文语义有所重复。C项adequate“适当的”，“双胞胎”和“适当的孩子”不适合构成对比的对象。
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