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  3. It’s the first question parents ask when their child is diagnosed with autism

It’s the first question parents ask when their child is diagnosed with autism

游客2023-06-24  2
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 【C1】______ it, too?
   According to the largest study of siblings (兄弟姐妹) in families with autism, the answer is yes. Among 664 children who had at least one older sibling with the developmental disorder, the 【C2】______ risk of autism was nearly 19%,【C3】______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【C4】______suggest that genes play a key role in autism risk. But they also hint that other environmental factors【C5】______by siblings, like influences in the womb (宫), may be important as well.
   On the【C6】______of the findings, the researchers recommend that doctors closely【C7】______younger siblings of autistic children to pick up any early signs of the disorder, 【C8】______ an unusually large head or delayed language development and communication skills. Evidence suggests that early 【C9】______ and diagnosis of autism can help children take advantage of therapies that can treat some of its【C10】______.
   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 [br] 【C5】
选项
答案 M
解析 空格前为名词factors，空格后为介词by，故此处缺少一个过去分词。根据文意推测作者在这里想表达的是兄弟姐妹在母体时的环境是相同的，故选shared。
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