2. 外语
  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 h

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 h

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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(子宫), 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 F)developing K)reason
B)basis G)distributed L)results
C)common H)dramatically M)shared
D)consequently I)including N)symbols
E)detection J)monitor O)symptoms
【C5】
选项
答案M
解析 空格前为名词factors，空格后为介词by，故推断空格处需要填入一个过去分词，与后面的部分一起作后置定语修饰factors。该句指出其他的环境因素对于患自闭症也有重要影响，比如在子宫受到的影响。同一个家庭的孩子都是从母亲的子宫里孕育出来的，因此这是兄弟姐妹们共同受到的环境因素，故答案为shared。
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大学英语四级

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