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【S1】______ 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【S2】______ risk of autism was nearly 19% ,【S3】______ 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【S4】______ suggest that genes play a key role in autism risk. But they also hint that other environmental factors【S5】______ by siblings, like influences in the womb(子宫), may be important as well.
    On the【S6】______ of the findings, the researchers recommend that doctors closely【S7】______ younger siblings of autistic children to pick up any early signs of the disorder, 【S8】______ an unusually large head or delayed language development and communication skills. Evidence suggests that early【S9】______ and diagnosis of autism can help children take advantage of therapies that can treat some of its【S10】______ .
A)average I)including
B)basis J)monitor
C)common K)reason
D)consequently L)results
E)detection M)shared
F)developing N)symbols
G)distributed O)symptoms
H)dramatically
【S2】
选项
答案A
解析 空格前面有定冠词the，后面是名词risk，因此需要填入一个形容词来修饰risk。作为研究对象的664个家庭里至少有一个哥哥或姐姐患有发育障碍症的孩子们，他们患自闭症的风险并不是完全相同的，因此研究得出的数据19％应该是平均值，故答案为average。
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大学英语四级

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