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  3. It’s the first question parents ask when their child is diagnosed with autism (自闭症). Will his future brothers or sisters have a

It’s the first question parents ask when their child is diagnosed with autism (自闭症). Will his future brothers or sisters have a

admin2022-07-05  42
问题     It’s the first question parents ask when their child is diagnosed with autism (自闭症). Will his future brothers or sisters have a higher risk of【C6】________it, too?
    According to the largest study of siblings (兄弟姐妹) families with autism, the answer is yes. Among 664 children who had at least one older sibling with the developmental disorder, the【C7】________risk of autism was nearly 19% , 【C8】________higher than previous sibling recurrence estimates that were anywhere from 3% to 10%. Kids with more than one older autistic sibling had an even higher risk of the disorder:32%.
    The【C9】________suggest that genes play a key role in autism risk. But they also hint that other environmental factors【C10】________by siblings, like influences in the womb (子宫), many be important as well.
    On the【C11】________of the findings, the researchers recommend that doctors closely【C12】________ younger siblings of autistic children to pick up any early signs of the disorder, 【C13】________an unusually large head or delayed language development and communication skills. Evidence suggests that early【C14】________and diagnosis of autism can help children take advantage of therapies that can treat some of its【C15】________.
    [A] average      [B] basis
    [C] common       [D] consequently
    [E] detection    [F] developing
    [G] distributed  [H] dramatically
    [I] including    [J] monitor
    [K] reason       [L] results
    [M] shared       [N] symbols
    [O] symptoms
【C11】
选项
答案B
解析 此处需要填入名词, 构成词组on the basis of, 意思是：在(发现)的基础上。故选B项basis。
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